Weeds add fertilizer to the soil. Weeds use nutrients the roses need to grow. Weeds increase the bacteria in the soil. Weeds consume most of the oxygen.
I gave my students this multiple choice question: A student plants rosebushes in her front yard. The student is frequently seen pulling weeds from the base of the rosebushes. What is the most likely reason that the weeds are pulled?

Only one answer is correct among these 4 choices:
- Weeds add fertilizer to the soil.
- Weeds use nutrients the roses need to grow.
- Weeds increase the bacteria in the soil.
- Weeds consume most of the oxygen.

Could you tell me which one is correct?

Weeds use nutrients the roses need to grow.