The answer is "A". As benefitial means good or well
<span>This discovery activity puts students in the place of real volcanologists by giving them access to real-time data from Kilauea Volcano, Hawaii. They learn about volcano monitoring techniques, study case histories of important volcanic processes, and then form and test hypotheses for past and future volcanic events with multiple instruments and real-time data. As a result, students will understand the processes that shape a basaltic shield volcano.</span>
A. Concrete
Janice Mirikitani uses concrete language to convey the universal theme of the suffering of war in “Attack the Water.