Study the underlined part of each sentence. In which sentence does the verb agree with the subject?

Many people on the tour bus was excited about seeing a pyramid.

The stops on the tour of Egypt was planned well in advance.

Imhotep, one of Egypt’s greatest architects, were very talented.

The sides of an Egyptian pyramid are almost perfectly equal.

The verb agrees with the subject in the sentence: "The sides of an Egyptian pyramid are almost perfectly equal."