Final answer:
To multiply fractions, multiply the numerators and denominators together. The result of multiplying 5/6 by -8/15 is -4/9.
Step-by-step explanation:
To multiply fractions, you simply multiply the numerators together and multiply the denominators together. In this case, you would multiply 5 and -8 to get -40 as the numerator, and multiply 6 and 15 to get 90 as the denominator. The result is -40/90. However, this fraction can be simplified. By dividing both the numerator and denominator by their greatest common divisor, which is 10, we can simplify the fraction to -4/9. Therefore, the correct answer is B) -4/9.