Concept:The word 'attenuate' means to reduce something in force, effect, or physical thickness.
Explanation:Look at the meaning of 'attenuate'. It refers to making something weaker, thinner, or less concentrated.
For example: The signal was attenuated by the long cable.
Now check the options:
- Repent means to feel sorry for a wrong action. This is not similar.
- Force means strength or energy. This is opposite to reduction.
- Divide means to separate into parts. This does not match.
- Make thin directly matches the idea of reducing thickness or strength.
Hence, the correct choice is 'Make thin'.
Answer:D. Make thin