Question

Mother dolphins whistle to their calves frequently after birth so that the calves will learn recognising their distinctive whistle.

A
learn recognising their distinctive whistle.
CORRECT ANSWER WRONG ANSWER
B
learn to recognise their distinctive whistle.
CORRECT ANSWER WRONG ANSWER
C
will learn to recognise their distinctive whistle.
CORRECT ANSWER WRONG ANSWER
D
learn to recognise their mother's distinctive whistle.
CORRECT ANSWER WRONG ANSWER
Solution

Correct option is

(D)