Subjunctive,because it's using the word "were",which is a verb,and it is contary to reality&a wish or a hypothetical.
Answer:
he thought that the "snakes" were the problem
Explanation:
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I and III only because they don't make sense
Parents have also been taught by society to eat and like the latest
sweets and snack food. Therefore, it is really difficult to change this attitude that in the household. Browsing through the product label takes a lot of time and not many people do it. Another thing is that healthy food is very expensive. So that, people prefer sweets and snacks.