1. which layer is most responsible for the movement of continents?

a. the outer core
b. the asthenosphere
c. the mantle
d. the continental crust
2. what is the main cause of earthquakes and volcanic eruptions?
a. the melting of oceanic crust
b. the continental crust cracking in a given location
c. collisions between tectonic plates
d. friction between the the mantle and the asthenosphere

"The asthenosphere" is the one layer among the following choices given in the question that is most responsible for the movement of continents. The correct option is option "B".

2. "Collision between tectonic plates" is the main cause of earthquakes and volcanic eruptions. he correct option among all the options given in the question is option "C". 

Ihave no idea what the answer is

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.