which part of this sentence might be too informal for an essay for social studies class?\nping pong requires…

which part of this sentence might be too informal for an essay for social studies class?\nping pong requires way more skill to master than most players realize.\nrequires\nskill\nway more
Answer
Brief Explanations:
In academic writing for a Social Studies class, language should be formal. "Way more" is an informal, colloquial phrase. It is better replaced with a more formal expression like "significantly more" or "much more".
Answer:
"way more"