Fact 1: Cells are the basic units of the structure and function of living things. Fact 2: Osteogenic cell types are indicated. Given the two facts above, what is a type of the basic units of the structure and function of living things?

Pick from: a). sensory neurons; b). osteogenic; c). animals; d). Chemical energy; e). Energy; f). trees; g). ferns; h). fur and fat;
Answer:
b).