I'd go with A or C. Definitely not B or D.
I'd say A.
The word "describing" or almost anything ending with "ing" signifies an action occuring now, or in the present. B, C, and D use "when describing" which leads to the assumption that these things listed are taken into account while the landscape is being described but answer choice A uses "when they describe" which is passive rather than active.
Answer:
1. The sole of my shoe pulled off.
I would need an adhesive to fix it.
2. My kitchen's sink is leaking.
With the help of a plumber and his tools, I would be able to fix it.
