We have the following facts:
p = You build it
q = They will come
From a list of options, we must select the one equivalent to the symbolic statement:
[tex]p\Rightarrow q[/tex]Now, we see that in the symbolic statement appears the symbol: ⟹, we must interpret this symbol as "then".
So, reading the list of options, we see that the correct one is:
"If you built it, then they will come".