Is the underlined clause independent or subordinate?

My grandparents took us to a restaurant after the casserole spilled on the floor.

A.
subordinate

B.
independent

Question

Is the underlined clause independent or subordinate? 

My grandparents took us to a restaurant after the casserole spilled on the floor.
 
 A.
subordinate
 
 B.
independent

logan13 · Answer

@Thesmarterone

anonymous · Answer

Subordinate because for it to be independent it would have to express a whole idea by it's self and "after the casserole spilled on the floor" doesn't so yes A :)

anonymous · Answer

Subordinate because for it to be independent it would have to express a whole idea by it's self and "after the casserole spilled on the floor" doesn't so yes A :)