- ADuckling
- BFawn
- CJoey
- DCygnet
Step-by-Step Solution
The relation is adult animal : the name given to its young. The young of a goat is a kid; the young of a swan is a cygnet. 'Duckling' is the strongest trap, since it is the young of a closely similar water bird but of a duck, not a swan. A fawn is the young of a deer and a joey the young of a kangaroo.
Answer: D) Cygnet