Which sentence has an error in pronoun-antecedent agreement?

We will be learning about animals that live in the arctic. your assignment is to find information about one animal in the arctic. be sure that you find the following information about the animal: average height and weight, appearance, diet, shelter, mating habits, and any other interesting or important facts. we will use the information that you gather in the research with an in-class project. be sure to keep track of your sources; your final project will require a works cited page. in an internet search engine, which group of keywords is most appropriate for this assignment? a) project, arctic, diet b) arctic, animals, facts c) cold, appearance, animals d) average height and weight, one animal