Question

Choose the verb that agrees with its subject.

Here _____ the bride and groom.
A.) is
B.) comes
C.) has come
D.) come

Answer 1

B. Comes.
No others are grammatically correct.

Answer 2

The bride and groom come here.
It's the same thing as they come here. Come is the plural of comes.

The subject is a compound subject which means that there is more than one person making up the subject. You need a plural form of a verb.