Assertion (A): During parturition, the head of the developed foetus gets pushed along the uterus due to the contraction of the uterine wall.
Reason (R): During parturition, cervical expansion takes place.

Options

A. Both A and R are true and R is the correct explanation for A.
B. Both A and Rare true, but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Explanation

To solve the question regarding the assertion and reason about parturition, let's break it down step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that during parturition, the head of the developed fetus is pushed along the uterus due to the contraction of the uterine wall.
- This is true because during labor, the uterus contracts rhythmically to help push the fetus down the birth canal.

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