Which of the following is listed as a main concern for land and soil that involves salinity?

• A. Increased salt content of fields
• B. Groundwater depletion
• C. Deforestation
• D. Loss of biodiversity

Answer: (A)

Salinity in soil means salts accumulate in the root zone, which directly affects plant water uptake and soil structure. The main concern described here is the increased salt content of fields, because higher soil salinity reduces crop yields and can degrade soil fertility over time. This buildup can result from irrigation with saline water, poor drainage, and rising groundwater bringing salts toward the root zone. Groundwater depletion is related and can worsen salinity, but the specific issue at stake is the salt content itself. Deforestation and loss of biodiversity are important environmental problems, but they are not the salinity-specific concern.