Which of the following sentences uses colons correctly? Check all that apply. The first four mechanical errors were compounded by his inability to: proofread and self-correct. Dear Dr. Smith: We would like to invite you to participate in our expert roundtable. Participants in the seminar will hear lectures on a variety of topics: building professional networks, managing retirement portfolios, and maximizing career opportunities.

C. Participants in the seminar will hear lectures on a variety of topics: building professional networks, managing retirement portfolios, and maximizing career opportunities.

Explanation:

In English language, colons introduce clauses/sentences which illustrates, explains, expands, or throws more light on the information/sentence that preceded the colon.

They may be used between independent clauses when the second sentence explains the first sentence.

The answer above informed us what participants will hear at the seminar with the help of a colon.

answer; i believe that the correct answer is (d)when the products are consumed or