A responsible citizen could best participate in serving their community by A-watching campaign ads on TV before going to vote.

B-registering for the selective service when they turn 18.

C-paying their federal income taxes on time each year.

D-driving a neighbor to their polling place on election day.

D (driving a neighbor to their polling place on election day.)

Explanation:

D is the clearest example of serving your community

also got it right

the world may never know

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.