For what is Hammurabi best remembered?

According to ohrp, a problem is an “unanticipated problem” when it meets which of the following criteria: unexpected, related or possibly related to the research, suggests that the research does not put the subjects or others at greater riskunexpected, related or possible related to the research, suggests the research puts subjects or others at greater riskunexpected, unrelated to the research but still occurring with a subject, suggests the research puts others at greater riskexpected, related or possible related to the research, suggests the research puts others at greater risk

Researchers have found that it takes to view a mental image that is larger or covers more distance than a smaller or more compact one.

2) based on the information, which is an opinion rather than a fact about immigrants to north america? immigrants