## Core Concept
The weight of the uterus can vary based on parity, which refers to the number of times a woman has given birth. Nullipara refers to a woman who has never given birth, while multipara refers to a woman who has given birth multiple times. The normal weight and size of the uterus can change due to these factors.

## Why the Correct Answer is Right
The normal weight of the uterus in a nullipara (a woman who has never given birth) is approximately 60 grams. In contrast, the uterus of a multipara (a woman who has given birth multiple times) typically weighs around 100 grams due to the hypertrophy and hyperplasia that occur during pregnancy. This increase in size and weight is a physiological adaptation to support pregnancy.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it does not accurately reflect the comparison between the uterine weight of a nullipara and a multipara.
- **Option B:** This option is incorrect for similar reasons; it does not provide a correct comparison or specific weights for nullipara and multipara.
- **Option D:** This option is incorrect as it also fails to accurately represent the known differences in uterine weight between nulliparas and multiparas.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the uterus increases in size and weight during pregnancy, and this change persists to some extent after delivery. The normal uterine weight post-pregnancy can remain slightly larger than in nulliparas, but specific weights can vary. A classic fact is that the uterus returns to its pre-pregnancy size and weight within 6 weeks postpartum, but some changes may persist.

**Correct Answer:** . 60 gm in nullipara and 100 gm in multipara.