Barnacles Are Crustaceans That Attach Themselves to Rocks, Shells, or Other

Barnacles are crustaceans that attach themselves to rocks, shells, or other objects in marine habitats.An ecologist who wants to estimate the population of a species of barnacle living along the mid-Atlantic coast would most likely

A) send a team of marine biologists to count every individual of the species.
B) count all individuals of a local sample of the species and check back at given intervals to see if the number changes.
C) perform DNA analysis on a sample group to determine how many unique individuals there might be in the overall population.
D) capture, mark, and release a number of individuals at the beginning and end of a specific period, then use the mark-recapture equation to estimate the total population size.
E) count individuals within quadrats at selected areas throughout the barnacles' range and extrapolate the results to the whole population.