You can use the process of elimination to arrive at this answer! Inscription means to write- you cannot write foreign workers into society. Intricate means complicated, imposition means to demand. If you place these definitions into the blank, they don't make sense. Therefore, the answer is integration- successfully bringing these workers into society.
The last one is not true. Only the second statement mentions how fragile the environment is that coral reefs exist in.The first statement focuses on erosion and pollution as causing the reefs to die.
