“Why don’t we wear sunglasses?” our grandpa would say when we went out on bright sunny days.  

A Our grandpa used to suggest wearing sunglasses when we went out on bright sunny days.

B  Our grandpa would warn us against wearing sunglasses on bright sunny days.

C Our grandpa asked us why we did not wear sunglasses when going out on bright sunny days.

D Our grandpa reminded us of going out with sunglasses on bright sunny days.