I was writing a sentence and got to thinking about the verb here:
Let's see who [get / gets] this reference.
Who is the subject here but it might refer to more than one, or it might not!
I was writing a sentence and got to thinking about the verb here:
Let's see who [get / gets] this reference.
Who is the subject here but it might refer to more than one, or it might not!
I'll change the example sentences for hopefully more clarity, showing context:
[plural agreement (after who) reasonable here; there are Google hits for "let's see who get" including "let's see who get it right", "let's see who get the farthest". More for "let's see who are elected / the underdogs / eligible ...".]
[singular agreement after who forced here (although the way the UK is going ...)]
[It is often quite acceptable to use the distributive singular, addressing / referring to the individual within a group / crowd /.... See They're using a cell-phone vs they're using cell-phones. Thus 'Gentlemen, give your wife a special greeting when you get home tonight.' / 'Girls, take your protractor in your left hand and ....'
So either option is available, though as @BillJ says, the default (where context doesn't override) is singular agreement ('gets') ... which covers one or more people getting the reference anyway.
who is an interrogative pronoun, meaning we use it as a replacement for a noun and which singularity or plurality can only be determined by the context or through a closer inspection of phrases surrounding it. In short, who can represent singular or plural noun.
Your sentence starts with Let's [let us] meaning you are addressing a group of people. We can conclude then that who is representing a plural noun [us].
Let us see who [among us] get the reference.
Or perhaps you may be an onlooker of some gathering and you are addressing yourself or a group of people (onlookers) to observe who among the people in the gathering can "get the reference."
Let us see who [among them] get the reference.
Moreover, the singularity and plurality of who here can be easily concluded since the sentence suggest that eventually one person among many will get the reference correctly.
PS.
I can see that you are relating who to the person/s that will get the reference right.
Note: This might not directly answer your question, but hopefully, will help you understand the use of who.