Idk sorry ask someone else trololololo
C, details that help readers visualize the settings better. A wouldn't work because it doesn't help the setting, B doesn't help the setting either and D would only add more confusion so UT would have to be C by process of elimination.
Answer:
Lab technician
Explanation:
Chemical used is the main independent variable. Cell growth was the dependent variable or response variable. The cell type and dose are both being tested within the experiment leaving lab technician.
Answer:
sorry i was late but for anyone else who wants to know the answer is
D. Vygotsky's theory of cognitive development
Explanation: