--- What’s up with Maria? She looks upset.--- A call from her mother the attack of homesi

问题补充：

--- What’s up with Maria? She looks upset.

--- A call from her mother the attack of homesickness.

A. set out

B. set about

C. set off

D. sent off

答案：

A. set out

B. set about

(答案→)C. set off

D. sent off

解析：“她妈妈的一个电话勾起了她的思家之情”。set off“激起”。所以答案C。