ANSWER ASAP Frederic Griffith used the word transformation to describe the changes in bacteria that he observed. Which is the most useful definition of transformation?
A. a permanent change in gene expression
B. a temporary change in the function or activity of a cell
C. a temporary change in the genetic composition of an organism
D. a permanent change in the genetic composition of an organism

D

Explanation:

this is because it's the genetics that undergoes the so called "transformation" not the gene itself

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.