Wombats are mammals with a gestation period of about 20 days. At birth, the baby wombat, called a joey, is tiny
and hairless. It crawls into its mother's external pouch
where it continues to develop for about eight months.

Based on this information, wombats are classified as
mammals.

the answer to your question is:

c. complementary base-pairing

answer; ///(a) ;

other quantities, called derived quantities, are defined in terms of the seven base quantities via a system of quantity equations. the si derived unitsfor these derived quantities are obtained from these equations and the seven si base units.