Explanation: re·flect
/rəˈflekt/
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verb
past tense: reflected; past participle: reflected
1.
(of a surface or body) throw back (heat, light, or sound) without absorbing it.
"when the sun's rays hit the Earth a lot of the heat is reflected back into space"
think deeply or carefully about.
"he reflected with sadness on the unhappiness of his marriage"
#4 would be your answer, because he's being tested against all of these forces
I believe the answer is C. thorough.
It's all about context clues. Careful is most similar to thorough and makes the most sense.