Correct Answer: barren

Solution : The correct choice is the second option.

Explanation: "Fertile" refers to land or soil that is capable of producing abundant vegetation or crops. "Barren" is its opposite, denoting land that is not capable of producing vegetation or crops.

The meanings of the other options are as follows:

• Fruitful indicates something that produces good results or yields.
• Strong means having power or robustness.
• Productive means capable of producing a significant amount or being fruitful.

Therefore, the correct answer is barren.