Correct Answer: Option C

Explanation

The part of the heart marked 2 is the Superior vena cava
Superior vena cava
- It is one of the two venae cavae.
- It is one of the great Venous trunks.
- it helps in returning the Deoxygenated blood from the systemic circulation to the Right Atrium.
- it helps in receiving the Venous return from the head of the body.

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