Pop quiz, Mets fans. What concerns you more:

a) Carlos Carrasco’s velocity?

b) Max Scherzer’s velocity?

c) Justin Verlander’s armpit?

d) The team’s weather prognosticators?

e) The fact that the Braves are on a 135-win pace?

f) Brett Baty’s thumb?

g) Francisco Alvarez’s readiness?

h) Eduardo Escobar and Mark Canha: 6-for-45 so far?

i) The middle relievers?

j) The closer?

k) Wondering how long the shelf like for BuckBall really is?

l) Ronny Mauricio’s 1.164 OPS happening in Syracuse rather than Flushing?

m) “We’re Mets fans so … well, everything?”

That’s only half the alphabet, so that’s not so bad for seven days’ worth of sample size, right?

Look, we can take the avuncular approach all we want, provide lectures about the long season, offer examples of a hundred different teams that stumbled out of the blocks — and a lot worse than the Mets have; they’re 3-4, after all, not 1-6 — remind you that not every team goes virtually wire-to-wire (and as the Mets proved last year, it’s not so fun to almost go wire-to-wire, either).

And we don’t have to offer these assurances by ourselves. The Mets themselves are happy enough to provide perspective.

Pete Alonso: “There’s a lot of things we can do better, and I believe we will.”

Francisco Lindor: “I believe in every single guy that we have. I think we have what it takes. We have the ‘it’ factor.”

Buck Showalter: “We are going home to friendly faces, we hope. We have been gone for what, almost two months? I think everybody is looking forward to getting back and seeing some people.”

Those friendly faces were supposed to be out in force at Citi Field Thursday afternoon before the game was postponed on account of blinding sunshine at what should’ve been first pitch, and dry, arid conditions for the next few hours. So for fans who had tickets for Thursday and can’t make Friday, that curious choice probably rates a little higher than the others.

But as noted baseball observer Grouch Marx once said: “Who are you gonna believe? Me or your own lyin’ eyes?”

And the truth is this: the Mets looked shaky all spring. They looked a little short on offense, and are (best-case) a little long in the tooth in the rotation. You look around the sport, the best teams’ lineups go at least eight deep, often nine; there are days so far when the opposing pitchers have been seen ordering margaritas when they get beyond the Nimmo/Marte/Lindor/Alonso/McNeil quintet.

That doesn’t mean 3-4 has to become 30-40, and 60-80, and 69-93.

But it does mean the Mets will not be afforded the luxury of tinkering in comfort as they did a year ago, when they not only sat in first place for 5 ½ months but had a playoff slot all but guaranteed them by the middle of July. It does mean that Showalter is going to have to figure out how to maximize what he has and it means that Billy Eppler (fortified by Steve Cohen) will have to figure out how to aide what ails them along the way.

The arrival of Alvarez will add a jolt of excitement to Opening Day 2.0 Friday, and his presence will surely help assuming he looks more like the guy who started the year in Syracuse slashing .250/.368/.688 and less the one who went .107/.294/.107 this spring. Baty will also be on the tip of fans’ tongues for as long as Escobar sits in his funk. This may not be fair to the kids, but neither is likely to mind a bit.

And nobody else will, either. The Mets will almost certainly look a lot different between now and October. But starting Friday, it would behoove them to play a lot different, too. It’s a long season sure. But as another baseball pundit once put it: It can get late early out there.