Question

which of the following is not a concern regarding the use of corn as a biofuel?
a. corn grows rapidly and causes minimal harm to the environment when combusted.
b. fossil fuels would be used to convert corn into a biofuel.
c. frozen corn might disappear from the freezer aisles of grocery stores.
d. building new refueling stations would result in initial costs.

Explanation:

Option A describes a positive aspect of corn as a bio - fuel, not a concern. Option B is a concern as it implies reliance on non - renewable fossil fuels for bio - fuel production. Option C is a concern about the impact on food availability. Option D is a concern about the cost of infrastructure for bio - fuel use.

Answer:

A. Corn grows rapidly and causes minimal harm to the environment when combusted.