Optimum temperature maintained for paddy straw mushroom cultivation is

Correct option is D

Correct answer – (d) Paddy straw mushroom requires warm and humid conditions for best growth. Its optimum temperature range is about 30–35°C. Therefore, 30–35°C is correct.
Information Booster / Facts Paddy straw mushroom is a tropical mushroom grown in summer. Lower temperature reduces mycelial growth and yield.
Why other options are incorrect (a) 10–15°C is too low for straw mushroom. (b) 18–20°C is suitable for temperate mushrooms, not straw mushroom. (c) 28–29°C is slightly lower than optimum range.