The song issues from the heart of the poet and travels to reach others. It wanders and, whether heard and enjoyed or not, eventually returns to its creator with all due love. Similarly, rain originates from the earth, and after fulfilling its role of spreading beauty and purity, returns to its origin.

It was related to the rain as the song from the heart of the singer come back to the singer in form of his appreciation similarly rain originates from the earth and come back to earth in different forms

The correct answer is option 'C' - from the heart of the singer.

Explanation:
The origin of a song is a complex and multifaceted concept. While it can be argued that a song can originate from various sources such as heaven, ocean, or the soul of the earth, the most direct and immediate source of a song is the heart of the singer. Here's a detailed explanation:

1. The Heart as a Source of Emotion:
- The heart is often associated with emotions and feelings. When a singer performs a song, they infuse it with their emotions, experiences, and personal interpretation.
- The heart acts as a conduit for the artist's emotions, allowing them to express their thoughts, feelings, and experiences through the medium of music.
- The emotions conveyed by the singer are an integral part of the song's origin, as they shape the performance and the way it resonates with the audience.

2. The Heart as a Center of Creativity:
- The heart is also closely linked to creativity and inspiration. Artists often describe the process of creating music as something that comes from deep within them, from their heart and soul.
- The heart is seen as the source of creativity, where ideas and melodies are born and developed.
- When a singer writes or composes a song, they draw upon their personal experiences, emotions, and creative impulses that originate from their heart.

3. The Heart as a Symbol of Authenticity:
- A song that originates from the heart of the singer is often considered more authentic and genuine.
- When a singer sings from their heart, it adds a layer of sincerity and vulnerability to the performance, making it more relatable and impactful.
- The emotions and authenticity conveyed through the song's lyrics and melody can deeply resonate with the listeners, creating a connection between the singer and the audience.

In conclusion, while a song can be inspired by various sources, the heart of the singer is the immediate and most significant origin of the song. It is through the heart that emotions, creativity, and authenticity are channeled into a musical expression that touches the hearts of those who listen.