At the water activity of 0.60, the growth of microorganisms inhibited is:

Correct option is C

Correct Answer: (c) Osmophilic yeasts
Explanation:
→ At aw = 0.60, most microorganisms cannot grow except some xerophilic moulds.
→ Osmophilic yeasts require higher aw (usually above 0.62–0.65) for growth; hence their growth is inhibited at 0.60.
Information Booster:
→ Lowering aw is a major preservation method for dried fish.
Additional Information (Other Options):
(a) Gram-negative bacteria require high aw (>0.95).
(b) Xerophilic moulds can still grow at low aw.
(d) Halophiles require salt-rich environments, not low aw.