Answer:
Neutral
Step-by-step explanation:
The options you were given are the following:
- In favor
- Opposed
- Neutral
- Amused
The author's attitude towards the said method of controlling mosquitoes can be described as neutral. He is simply stating facts: how the city is battling a mosquito situation and using different methods to deal with it. He doesn't say that he does (like some citizens) or doesn't believe (like the authorities) that the dragonflies will solve the problem. That's why we can't say that he is in favor of or opposed to this method. His tone is neutral and objective, so we can't say that he is amused, either.
Thus, the correct option is the third one.