My uncle tries to spend time playing with his children _______ he is very busy.
Correct answer: GET
The answer is NO
My uncle tries to spend time with the children even though he is very busy.
Consider the answers:
A. because of → Causal conjunction, after because of (because) is a noun/noun phrase (DT/DT), not a clause.
B. although → Conjunction indicating the opposite, after Although (although) = Even though = Though = In spite that is a clause (clause)
C. despite → Conjunction of opposites, after despite (although) = In spite of is noun/noun phrase/V_ing (DT/phrase DT/V_ing), not clause.
D. moreover → Conjunctions to add information or emphasis, translate whole sentences: My uncle tries to spend time with the children, besides he is very busy. (inconsequential)