Answer:
The answer is Chelsea, in my opinion. This is a very opinion based problem, because they all technically make good scientists. However, generally, I would say that a scientist is someone who is skeptical that a solution cant be obtained for a problem, and their creativeness allows them to develop new ways to solve it. Their curiosity also does not make them adverse to trying unconventional methods.
Latrisha does not like to follow rules, which is an issue because science requires ethics. Nobody can have a free hand, they need to follow set procedures or rules
Benjamin is a good scientist but hes subjective, meaning he's biased. Because of this he's automatically out the window
Marcus is also out because being a scientist requires being a team player, being able to work with other people on a daily basis and communicate your results is extremely important
Therefore the answer is A