The correct answer is d because it first makes the air hot then it can burn the singer.

Explanation:
Raga Deepak is an ancient Indian classical musical composition that is believed to have mystical properties. It is said that when sung perfectly, it can have powerful effects on the surroundings and the person singing it. The correct answer to the question is option 'A' - it burns the singer. Let's explore why this happens:

1. Mythological Beliefs:
According to ancient Indian mythology, Raga Deepak is associated with the fire element. It is believed that the composition has the power to invoke and control fire. When sung perfectly, the fire element is said to manifest and engulf the singer, resulting in burning.

2. Symbolism of Fire:
Fire is a powerful symbol in many cultures, representing destruction, transformation, and purification. In the context of Raga Deepak, the fire is symbolic of the intense energy and passion that is generated when the raga is sung perfectly. This energy can be overwhelming and potentially harmful to the singer.

3. Intense Vocal Effort:
Singing Raga Deepak requires great skill, control, and vocal effort. It involves complex melodic patterns, intricate improvisations, and a deep understanding of the raga's nuances. Singing it perfectly requires a high level of mastery, and the intense vocal effort can take a toll on the singer's vocal cords and overall well-being.

4. Metaphorical Interpretation:
While the question may suggest a literal interpretation of the singer being physically burned, it is also possible to interpret it metaphorically. Singing Raga Deepak perfectly can be an emotionally and spiritually intense experience. It can bring forth deep emotions, inner struggles, and catharsis. The "burning" in this context may refer to the emotional and psychological impact on the singer, rather than a physical burn.

In conclusion, the answer to the question is option 'A' - when Raga Deepak is sung perfectly, it is believed to burn the singer. This can be understood in both a literal and metaphorical sense, representing the intense energy and emotional impact of the composition. However, it is important to note that these beliefs are rooted in mythology and should not be taken literally.