Are the source of antibody-producing cells.
a. b cells
b. macrophages
c. plasma cells
d. t cells
e. monocytes

Option C. "Plasma cells"

Explanation:

An antibody can be defined as a protein produced by the plasma cells which are utilize by immune system able to bind with specific antigen that protects body from diseases.

Plasma cells are antibody-producing cell that originates from B cell. The antibody produced from plasma cells are released into body and lymph, these antibody molecules bind to the target antigen and allow destruction or neutralization.

Hence, the correct option is C.

answer; i believe the answer is hydraulic action;

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: