---Tina I want to have a pet. How about a dog?I prefer a cat. It is to take care of.

问题补充：

---Tina, I want to have a pet. How about a dog?

--- I prefer a cat. It is to take care of.

A. easiest

B. the easiest

C. easier

D. easy

答案：

A. easiest

B. the easiest

(答案→)C. easier

D. easy

解析：通过题干，可知题目中提到两个动物dog和cat，说明是两个相比较，故用比较级排除ABD。本句的意思是“它更容易照顾”。所以本题选C。