Which is the subordinate clause in the sentence?

As the layers of ash slowly compressed, partially burned flowers changed into fossils.

A.
partially burned flowers

B.
changed into fossils

C.
as the layers of ash slowly compressed

D.
burned flowers changed into fossils

Question

Which is the subordinate clause in the sentence? 

As the layers of ash slowly compressed, partially burned flowers changed into fossils.
 
 A.
partially burned flowers
 
 B.
changed into fossils
 
 C.
as the layers of ash slowly compressed
 
 D.
burned flowers changed into fossils

lovelyanna · Answer

I think it's B.
C and D are good alone, which means they are independent.

anonymous · Answer

thats  what ii thought