decided whether the underline word below is a preposition interjection or conjunction will grandma stay in flordia through the winter

Even though there isn't an underlined word in this sentence, it is still possible to answer the question because of the options given.

The underlined word is a preposition.

Explanation:

The sentence "Will grandma stay in Florida through the winter?" does NOT have any interjections or conjunctions. An interjection has the purpose of conveying an emotion in an exclamatory way. For example: "Wow!", "Ouch!" etc. A conjunction is a word used to connect other words, phrases, or clauses inside a sentence. There are coordinating and subordinating conjunctions. For example: but, and, or, although, because, etc.

In the sentence, we do have prepositions. "In" indicates location, and "through" indicates, in this case, the duration of an action or state. It is important to note that "through" can also be an adverb or an adjective. As we can see, preposition is the only option that can be found in the sentence.

b is the answer.   i sat on the lumpy sofa, totally exhausted, with a bad taste in my mouth, wondering what i should do next.  

i’m alive so yes and the author is a technique idiom