7. Which choice best expresses Douglas's intense involvement in her study of the wetlands?
Your Answer is
Correct Answer is B
Explanation
The stem should express the options for Douglas' intensive involvement in her wetland research.
Item B: immerse in "immerse in it", which is in line with the requirements of the question.
A item: participate in "participation",
C item: gave thought to "thinking",
D item: dabbled in "involvement".