Which word in the sentence should be followed with a semicolon?

Jan's speech was interesting and lively Tim's was a bit too long.

a; interesting

b; lively

c; speech

d; Tim's

I think the correct choice is D such that the sentence becomes: Jan's speech was interesting and lively; Tim's was a bit too long. This is because semicolons are typically used to link two independent clauses that are very much related. In this case the two independent clauses are:

(1) Jan's speech was interesting and lively

(2) Tim's was a bit too long