Use reasoning to answer the following question. What is the microscopic building block of any living being?
Options:
- (A) trees
- (B) cell
- (C) oxygen
- (D) moss
- (E) molecule
- (F) plants
- (G) blood
- (H) life

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Cells are the microscopic building blocks of organisms. Any living being is an organism. Cells are the microscopic building blocks of living beings.
So, the answer is (B).