11 is a factor of 121.
What is a factor?
A factor of a number is a number that makes up the former number. When a number is factorized, it gives us the factors of the number.
What are the factors of 121?
The number 121 can also be written as:
121 = 11*11
This means that when 11 is multiplied by itself, it gives 121.
This also means that 11 is the only factor of the given number.
Now observe the given options. We can see that only one option is correct and that option is 11.
Therefore, we have found the factor of 121 is 11. The correct answer is option D.
Learn more about factors here: https://brainly.com/question/25829061
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