The purse found on the playground matches the by Mary so it must be hers.A. directionB.

问题补充：

The purse found on the playground matches the by Mary, so it must be hers.

A. direction

B. expression

C. description

D. instruction

答案：

A. direction

B. expression

(答案→)C. description

D. instruction

解析：四个选项分别表示方向、表情、描述和命令，根据题意选C，符合玛丽的描述。