Why is using too many complex sentences in technical documents a bad idea?

Excerpt from marsupials carole jenkins they are basically very timid animals and 5 exscape from their enemies by jumping away on their strong and powerful hind legs. look at the underlined section labelled 5. there may be a mistake in punctuation, capitalization, or spelling. if you find a mistake choose the answer that corrects the mistake. if there is no mistake, choose ‘correct as is.’ a) correct as is. b) escape from their enemies by jumping away c) exscape from there enemies by jumping away d) exscape from their enemie’s by jumping away

Does any one read this story "when mr. came to dine". in 9th grade. plz i need with one question about this story?

In the story “seventh grade,” victor’s and michael’s hopes and expectations about girls often cause them to a. act in embarrassing ways. b. get into trouble at school. c. struggle with friendships. d. do poorly in their classes.