The agreement between the National Football League (NFL) and thousands of former players who suffered concussive injuries on the gridiron is an example of ______.

People who remember city layout increase the size of the posterior part of the hippocampus, which is known to be involved in spatial___.

Fill in the blank(s) with the appropriate word(s).

The age of viability

A) is the point at which the baby can first survive if born early. B) occurs sometime between 18 and 21 weeks. C) is the point at which the baby can be born without being premature. D) occurs sometime during the second trimester of pregnancy.