It could be plausible because that is a synonym for credible and means seeming reasonable
In My Side of the Mountain<span>, Sam Gribley has run away from his home in New York City in order to live off the land in the Catskill mountains. This setting is key. It could be considered another major character in the book. Everything Sam does and learns about is based on his close attention and reaction to the forest and all of the plants and animals that live in it. </span>
The correct answer is his or her. Everyone is a singular indefinite pronoun; therefore, the singular form his or her agrees with the antecedent.
