Final answer:
The age pyramid that depicts the current distribution of the U.S. population can best be described as a 2. rectangular pyramid because it has a relatively uniform distribution across age groups with similar numbers of individuals in each age cohort.
Step-by-step explanation:
The age pyramid that depicts the current distribution of the U.S. population can best be described as a 2. rectangular pyramid.
Population pyramids are graphical representations of the age structure and sex distribution of a population. The rectangular pyramid shape indicates that the population has a relatively uniform distribution across age groups, with similar numbers of individuals in each age cohort. This shape suggests a balanced and stable population with low overall population growth.