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 ...
distinguish among these different parts of wave:amplitude,crest,trough,and wavelength. Amplitude-maximum displacement;crest-point of greatest positive displacement;trough-point of greatest negative displacement;wavelength-distance from one crest to the next.