Final answer:
Multiplying -121 by 31 gives us the product -3751. This operation doesn't require scientific notation and the answer corresponds to option c.
Step-by-step explanation:
To multiply and simplify the product of -121 and 31, we simply perform the multiplication:
-121 × 31 = -3751.
Therefore, the product is -3751, which matches option c. Here, we do not require scientific notation as the numbers provided are already integers and not large or small enough to require it. If we did need to express this product in scientific notation, it would be -3.751 × 103.