The use of contractions and colloquial 'slang' implies a writer, or persona adopted by the writer, that doesn't have a great deal in the ways of education, he/she appears to be writing things as they are said rather than how we as an audience know them to be spelt. This can be shown by quoting any contraction or wherever there's an amendment to the text, for example "hender" instead of "hinder".
<span>The use of nature also implies the simpleness of the two characters, by using the stream imagery it gives quite a straightforward steady approach, more gentle than say a river but still pretty much in that ideal</span>
<span>The question is asking us to find the simple subject in the following sentence:
The space shuttles have made travel to the International Space Station convenient and possible.
First, the whole subject is "the space shuttles" and the head of this phrase is B. shuttles - that's the correct answer</span>
