slipshod
sketchy
exhaustive
superficial
Answer is Right!
Answer is Wrong!
The correct answer is C. exhaustive.
A comprehensive approach is one that is thorough and complete. It takes into account all aspects of a problem or situation. A slipshod approach is careless and incomplete. A sketchy approach is superficial and does not provide enough detail. A superficial approach is also not thorough and does not consider all aspects of a problem or situation.
In this case, the speaker is saying that the person they are talking about took a thorough and complete approach to the matter at hand. This means that they considered all aspects of the problem and did not make any careless mistakes.