Clustering disease is a physiological disorder of (RJ AAO 2018)

✅Explanation:
-Clustering disease, also known as "Jhumka" or "bunchy top," is a physiological disorder primarily affecting mango trees. It is characterized by the development of numerous small, underdeveloped fruits in tight clusters. This condition results in poor fruit quality and yield loss.

📌Other Options Explanations:
-Option A (Grapes): Grapes are susceptible to various physiological disorders. A common disorder in grapes is "shatter," where flowers or young fruits drop prematurely.
-Option C (Sapota): Sapota (or Chikoo) can experience physiological disorders like fruit cracking and premature fruit drop.
-Option D (Banana): Bananas face issues like "choking" or "tightening" of the bunch, but this is different from mango clustering disease. Banana bunches are naturally compact, whereas clustering in mangoes is an abnormal growth pattern.