First sentence is the central idea
Answer:
b) : | I guess not quite Sure
C. uneven parallelism
Uneven parallelism means that the clauses within your sentence have the same grammatical structure. If you look at the clauses in the sentence "with a keen sense of observation" and "who dedicated long hours in the lab" they do not have the same grammatical structure. Thus the sentence suffers from uneven parallelism.
The logical fallacy which occurs in this case is a fallacy called Causal Fallacy, which in short words is when you explain something with the not necessarily true cause. this is calledin latin <em>non causa pro causa</em> which means,this is not cause for this cause. For example, people see a sports car crashed on the street. Immediately they blame the sports car driver for driving too fast. This is a false cause, because despite a sports car can be fast, that was not necessarily the cause of the accident.