Question

the number of dead cells is one of the variables in our experiment. what type of variable is it? a) independent variable b) controlled variable c) random variable d) dependent variable

Explanation:

In experiments, the number of dead cells is typically measured as an outcome that depends on changes to another variable (like a treatment or condition). An independent variable is the one manipulated by the experimenter, a controlled variable is held constant, a random variable describes probabilistic outcomes, while a dependent variable is the measured response. The number of dead cells fits the definition of a dependent variable as it is the variable being observed/measured based on experimental changes.

Answer:

d) Dependent variable