Our task is to choose the word that has the same or similar meaning as the word <em>gaunt</em> used in the sentence <em>Several women's rights groups have criticized models for being too gaunt.</em> Words or phrases from the same language that have identical or similar meanings are called synonyms.
The adjective <em>gaunt</em>, when referring to a person, has the meaning <em>very thin, especially because of sickness, hunger, or age.</em>Out of the listed options, the only word with a similar meaning is <em>skinny</em>, so that is the correct answer.