Concept:A good layer is a hen with physical traits that show active and efficient egg production.
Explanation:A good layer typically has a bright red comb and wattle, bright and bulging eyes, and a broad and flexible pelvic bone.
These features indicate good health, blood circulation, and the ability to lay eggs easily.
A long and curved beak is not related to egg-laying ability.
It is not a recognised characteristic of a good layer.
Therefore, the odd feature among the options is the long and curved beak.
Answer:B. Long and curved beak