The correct answer is B) overfishing.
All of the following are concerns with regard to agricultural production and its effect on the environment, except overfishing.
Overfishing is not part of the agricultural production. Overfishing is a concern of fisherman and the consequences for the sea life.
Agricultural production has some other concerns such as increased water scarcity, deforestation, and decreased soil salinity. One of the most permanent concerns for agriculture authorities and farmers is the issue of climate change. This factor is creating some weather anomalies that impact the production of food in the fields.