Syntax helps the paper/story/paragraph/book flow properly. Without syntax, you're going to having this one big confusing mess that almost no one understands.
Answer:
1). Literature <u>can be classified</u> into four main kinds.
2). The institute supported his efforts in the search for a <u>problem</u>.
Explanation:
The first sentence has been converted into the passive voice by substituting the subject 'we' with the object 'Literature' in order to shift the emphasis from the former to the latter and the verb. The antonym of 'solution' i.e. 'problem' has been employed in the second sentence as per the requirement. It means straightly the opposite of the 'problem.'
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. The setting that would best <span>develop the theme in a play whose tragic hero's weakness is a lack of respect for authority would be a circus. Hope this helps.</span>