In the first I think its grow them and in the second I believe it is harm the plants hope this helped :)
could i get the examples? that would help us answer the question.
I believe it is B, it makes the most sense "Although Marvin loves to fish, he seldom gets the chance." Hope this helps!
The first thing a writer should begin with in his research is to <span>examine broad areas of interest. </span>Having had <span>a general sense of an </span>area<span> in which he/she is interested, the writer can then go on </span>to choose a topic for research in that area f interest, with a good understanding of why the research is to be done.