A - Although he denies them, Dr. Vasequez faced several scandals last year.
A complex sentences must have both a dependent clasuse (although he denies them) and an independent clause (Dr. Vasquez faced several scandals last year.
Options B and D are compound sentences (two independent clauses) and option C is a simple sentence.
Because She Didn't Want Things To Get Worse. She Didn't Want To Be Hated Anymore. She Thought It Was Best To Not Say Anything
A reference to another literary text, poem, or mythological story is an allusion.
Allusion refers to a brief reference to a person, place, event or to another literay work made in a piece of writing or literary work. Allusion was very common in classic and romantic poetry which had many references to ancient mythology.
Allusion is just a passing comment and the writer expects the reader to have broad knowledge to spot the allusion and comprehend its importance in a text.
