Sure, let's start by finding the smallest factor (other than 1) of 91.
To find factors of a number, we divide by all numbers up to that number to see if the remainder is 0. For the number 91, if you go through this process, you will find that the smallest factor (other than 1) is 7.
Now, we have to find out which of the provided options have 7 as a factor. Let's go through each of them:
e) 30 - The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. Therefore, 7 is not a factor of 30.
f) 35 - The factors of 35 are 1, 5, 7, and 35. Therefore, 7 is a factor of 35.
g) 39 - The factors of 39 are 1, 3, 13, and 39. Therefore, 7 is not a factor of 39.
h) 44 - The factors of 44 are 1, 2, 4, 11, 22, and 44. Therefore, 7 is not a factor of 44.
As we can see from above, only the number 35 has 7 as a factor. Therefore, the correct answer is f : 35.