A) oviparous mammals
B) pouched mammals
C) oviparous reptiles
D) viviparous snakes
Correct Answer: A
Solution :
Gynacomastism is a phenomenon of development of mammary gland in male. In these, both male and female suckle the young one. It is found in oviparous mammals like Platypus, Echidna and other monotremate mammals.
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