Answer the following question: Fact 1: Population density is the average number of individuals per unit of area or volume. Fact 2: Another measure of growth is population density. Given the two facts above, what is is the average number of individuals per unit of area or volume?

pick from the following.
(a). solid, liquid, gas;
(b). Earth orbiting the Sun;
(c). competing for resources;
(d). measure of growth;
(e). more abundant;
(f). it keeps an organism warm;
(g). fur and fat;
(h). competition;
Answer:
(d).