Which ofthe following sentences is correct? Escolha uma opção: a. The boy, who his mother is a doctor, is very smart b. The boy, that his mother is...

Which ofthe following sentences is correct?

Escolha uma opção:

a. The boy, who his mother is a doctor, is very smart

b. The boy, that his mother is a doctor, is very smart

c. The boy, which his mother is a doctor, is very smart

d. The boy, whose mother is a doctor, is very smart

e. None of the above