Answer:
The correct answer will be option-Sweeter fruit enhances reproductive success in this species of fig
Explanation:
The production of sweet fruits is considered an adaptation in plants which increases the chances of survival by increasing reproductive fitness.
In the given question, The number of the variety of the figs which produced sweet fruits was favoured more than the figs which produced less sweet fruits. The reason for this difference is that the sweet fruits are eaten by the insects and birds which help the plants spread the seeds to a larger area and thus increases the reproductive success. The variety with less sweet fruits is eaten but not favoured by the animals.
Thus, the selected option is the correct answer.