Answer:
C - difficulty pronouncing the word squirrel.
Step-by-step explanation:
Serena refers to a squirrel as a rabbit. She points correctly to a squirrel when given the word squirrel in a comprehension task, which means she can distinguish the squirrel from other animals. Therefore, option A and B are incorrect, and option D is incorrect as well given that she points to a squirrel in a comprehension task, making the only option left, and correct, the C. She has difficulties pronouncing the word squirrel.