Answer: A is probably correct. There are two ideas, and they are both about scarecrows, so one adds on to the other.
Answer:
When revising a narrative essay, the writer should include sensory language that allows the reader to see, smell, hear, feel, and taste.
Answer:
Before Nate did his homework, he took the dog out for a walk.
A, by adding a subject and a verb.
And no, it doesn't change it into a sentence, it is still a clause.
For example:
Meanwhile, with the golden and yellow flowers growing...
See, I added a subject and a verb, but it is still a clause because what happens while the flowers are growing is still unknown.
Hope this helps baiii <3