An antecedent is a word for which a pronoun stands. The pronoun must agree with its antecedent in number. Rule: A singular pronoun must replace a singular noun; a plural pronoun must replace a plural noun. Here are nine pronoun-antecedent agreement rules.
Best Answer: Wrong answer. Well trough is right. But peak is totally wrong. The crest is the highest point on a wave, while the trough, or valley between two waves ...
Aside from water and energy, the two main parts of a wave are its CREST, the area that is farthest from the Earth's core, and its TROUGH, the part of the wave that forms just â¦ before it gives way to the next crest. When two or more waves combine, their energies are combined.