25.
a. Brazil, in which population is about 214 million, is a huge country
which covers nearly half of South America.
b. Brazil, in which population is about 214 million, is a huge country that
it covers nearly half of South America.
c. Brazil, whose population is about 214 million, is a huge country which
covers nearly half of South America.
d. Brazil, whose population is about 214 million, is a huge country that it
covers nearly half of South America.