He is a good fellow; but what I dislike is his reckless handling of things.

intelligent
cautious
dilligent
brilliant

The correct answer is B. cautious.

A cautious person is careful and avoids taking risks. This is the opposite of reckless, which means taking unnecessary risks or acting without thinking.

The other options are not correct because they do not describe someone who is careful and avoids taking risks.

  • Intelligent: An intelligent person is quick to learn and understand things.
  • Diligent: A diligent person is hardworking and conscientious.
  • Brilliant: A brilliant person is very intelligent and talented.

It is possible that the person in the question is all of these things, but the word “reckless” suggests that they are not careful and take unnecessary risks.