Answer:
B. B
Step-by-step explanation:
As we know that convective zone is that part of the sun where heat is primarily transferred by convection mode. In this part of sun major proportion is gas so that heat is transferred by gas molecules.
So here we will have
outer most part of the sun is E = CORONA
then it is the surface of sun which is A = PHOTO SPHERE
Then the inner part to the surface of sun is B = CONVECTIVE ZONE
then the next inner part is vacuum where heat is transfer by C = RADIATE ZONE
Then the innermost part of the sun is its D = CORE
so correct answer will be B