A lava flow with a surface of rough, jagged blocks and sharp, angular projections is called an aa flow (B).

According to the passage :
B. All branches of government have equal power.
is the correct answer.
The Western front was best characterized by trench warfare. The armies dug into the ground, both sides constructing elaborate trench networks. This caused them to reach a stalemate for most of the duration of the war.
(i got this from google btw)
hope this helped :) pls give branliest