Answer:
Pioneer species.
Explanation:
Succession may be defined as the change in the biological species of the community with respect to time. Two main types of succession are primary succession and secondary succession.
The pioneer species is the first species that arrive on the barren land. The availability of pioneer species can result in the formation of large climax community. The pioneer species first colonize on the barren land.
Thus, the correct answer is option (A).
