The average of n natural odd numbers is _____, where n is odd.

Correct option is C

Given:
n natural odd numbers.

Concept Used:
Odd numbers form an arithmetic progression: 1, 3, 5, ...

Formula Used:
Average of n terms of an AP:

​$$\text{Average} = \text{Middle term (since } n \text{ is odd)}.$$​​

Solution:
For n odd numbers, the middle term is n.