Mother told me ?a.not play B.not to play c.not to play with D.not play with

选 B

短语的固定搭配办法

tell somebody (not) to do something

告诉某人（不要）干某事

所以选B

play with 是和谁一路玩，一般要有宾语，那里没有，显然是B

Mother told me not to play. 妈叫我停了?? 别玩 (鬧) 了.

Mother told me not to play with Tom. 妈叫我别和??Tom)玩(交伴侣)了.

选B