The contraceptive method which is a barrier method used by the male is
condom
The correct option is C.
Explanation for the correct option:
Condom:
Explanation for the incorrect options:
Option A:
IUDs are Intrauterine devices used by females.
Option B:
Option D:
Diaphragm or cervical ring, used in females.
Hence, a Condom is the contraceptive method which is a barrier method used by males.