Answer:
that would be a negative sentence because an affirmative sentence expresses the thruth of an assertion.
Explanation:
The revision that uses subordination to revise the example is C: "Although it took me a while to get used to the new software, now I like it". Subordinate clauses begin with a subordinate conjuction or a relative pronoun and contains a subject and a verb. However, they are dependent because they do not express a complete thought and therefore cannot stand on their own.
*Although it took me a while to get used to the new software
As you can see, the sentence does not express a complete thought. That is why it is grammatically incorrect.
It's not clear where the paragraph break is between one and two, but I might be able to help you. The last option is incorrect, because all of the text relates which is why it's hard to determine where the paragraph break might be. Paragraph one does not offer a solution as it isn't until the end we know the cause of the dark day. While both paragraphs have at least one fact, paragraph one seemingly is full of guesses as to the cause of the dark day. This leaves the only correct option as the first one. The researchers decided to investigate the cause of the dark day, and then the results are reported.
I have a big test tomorrow; I can't go out tonight
