Adifference between two groups in an observational study that can explain why the outcomes were very different between the groups is called what?

A confounding variable

Explanation:

A confounding variable is an element, other than the investigated treatment, that may affect the measured outcome of an assay.

The confounding variable occurs when the association observed derives, at least in part, from differences between groups other than the exposure under study, which affect the risk of presenting the outcome of interest.

answer to ur question is college b

glass wants to live in a world of super heroes and villains. he have lived all his life trying to be responsible for the creating the origin story of a super hero; he schemed and caused many incidents (many of them fatal) hoping that someday someone with superpowers would show up and save the day.

he knew himself very much. he saw himself as a villain of a real-life super hero story. he was aware of his strengths (more than smart enough for being manipulative and scheming) and weaknesses (having fragile bones and having to rely on his mind to succeed).