The correct answer is B. July.
Ladakh is a cold desert region in the Indian state of Jammu and Kashmir. The average temperature in Ladakh ranges from -20°C in winter to 30°C in summer. The hottest month in Ladakh is July, with an average temperature of 25°C.
The other options are incorrect because they are not the hottest months in Ladakh. June is the second hottest month, with an average temperature of 24°C. May is the third hottest month, with an average temperature of 23°C. April is the fourth hottest month, with an average temperature of 22°C.
The reason why July is the hottest month in Ladakh is because it is the month when the sun is at its highest point in the sky. This means that the days are longer and the nights are shorter in July than in any other month of the year. Additionally, the monsoon rains usually start in July, which brings with it warm, humid air.