Final answer:
To find 3/7 of 1/5, you multiply the numerators and the denominators. The answer is 3/35.
Step-by-step explanation:
Multiplying fractions involves multiplying the numerators together to get the new numerator and multiplying the denominators together to get the new denominator.
To find 3/7 of 1/5, you multiply the two fractions together. You multiply the numerators (3 × 1) to get 3 and multiply the denominators (7 × 5) to get 35. So, 3/7 of 1/5 is 3/35. Therefore, the correct answer is B. 3/35.