How could the incorrect use of parallel structure negatively impact your writing?

Which of the following is a complex sentence? a. after henry submitted his essay, he realized that he hadn't proofread the last page. b. identity theft is a growing problem, especially among seniors. c. we didn't have enough potatoes for dinner, so we served rice instead. d. jim tried to watch a video on a device connected to a crowded wireless network; as a result, the video stuttered and froze.

According to the riddle of the rosetta stone, what problem did both jean-francois champollion and sylvestre de sacy face in their attempts to decipher the writings on the rosetta stone?

What do we call a two-syllable metrical foot that consists of one unaccented syllable followed by an accented syllable? a. anapest b. dactyl c. iamb d. elision