A quantity that measures……….of the body is called………..of the body.

Explanation

To solve the question, we need to fill in the blanks with the appropriate terms related to the concept of rotational motion in physics.

### Step-by-Step Solution:

1. **Understanding the Concept**: The question states, "A quantity that measures... of the body is called... of the body." We need to identify what quantity is being referred to and what it is called.

2. **Identifying the Quantity**: The quantity that measures how difficult it is to change the rotational motion of a body is known as its rotational inertia. This is a crucial concept in rotational dynamics.

...