D. parallel structure just means that all of your verbs in the comma series line up in regards to tenses, here. in choice D, it's "BE friendly," "INTRODUCE yourself," and "SMILE." these are all present tense verbs.
the rest of the choices don't match--"exercise" and "stretching" are two different verb forms in choice A, "to go to the library" is the odd one out in choice B, ane "to build" doesn't match with the "-ing" verbs in choice C.
DescriptionDeductive reasoning, also deductive logic, is the process of reasoning from one or more statements to reach a logically certain conclusion. Deductive reasoning goes in the same direction as that of the conditionals, and links premises with conclusions.
Hope this helps :)
You will have to provide the comparison notes for anybody to answer this question correctly.
Answer:
Interjections are rarely used in academic or formal writing; they're more common in fiction or artistic writing.
EXAMPLES
Oh My God!!!!
What the hell!!!
Ayyo!!
Pardon??
etc etc