Claustrophobia is the disease when you have a problem with small spaces or people being too close to you, you can also look it up on google.
D. the reader. The reader will always be the one you're writing for, since the idea of writing, especially academic writing, is usually meant for others to read.
illustration is word with double consonants
twenty five is hyphenated number word
barrier reef is word divided with syllables at end..
going is hyphenated adjective
brand new is hyphenated compound