Question

read the text. then, add the best concluding sentence.
despite antarctica’s extreme cold, dryness, and limited sunlight, two flowering plants thrive: antarctic hair grass and antarctic pearlwort. the hair grass features long, thin leaves, while the pearlwort has bright yellow blooms. both of these plants possess strong roots, capable of withstanding harsh antarctic winds. hair grass and pearlwort also have a vascular system. this internal structure takes up nutrients from the antarctic soil and distributes them to the plants’ stems and leaves.
______.
these traits demonstrate how flowering plants dominate the antarctic ecosystem.
these traits highlight how antarctic hair grass and pearlwort survive in a difficult environment.
these traits suggest that flowering plants recently adapted to the antarctic climate.
these traits reveal how hair grass successfully competes with pearlwort for nutrients.

Explanation:

The text details physical traits of Antarctic hair grass and pearlwort that help them survive Antarctica's harsh conditions. The correct concluding sentence must summarize this focus on their survival adaptations. The first option is incorrect as the text does not state flowering plants dominate the ecosystem. The third option is wrong because there is no mention of recent adaptation. The fourth option is incorrect as the text does not discuss competition between the two plants. Only the second option accurately ties the listed traits to their survival in the difficult Antarctic environment.

Answer:

These traits highlight how Antarctic hair grass and pearlwort survive in a difficult environment.