In the beginning of drying of fish, the drying rate is:

Correct option is A

Correct Answer: (a) Constant
Explanation:
→ During initial drying, surface moisture evaporates rapidly and the drying rate remains constant.
→ This is known as the constant-rate period.
Information Booster:
→ Later stages enter falling-rate period as internal moisture diffuses outward slowly.
Additional Information (Other Options):
(b), (c), (d): Occur at later or transitional phases.