Explanation

2/7 = (2/7) x (100/100) = 200/7 = 28.57%

1/35 = (1/35) x (100/100) = 100/35 = 2.86%

Now, divide the percentage equivalent of 1/35 by the percentage equivalent of 2/7 and multiply by 100:

(2.86 ÷ 28.57) x 100 = 10%

So, 1/35 is 10% of 2/7.

The correct answer is: 10%