1. a u-boat is
a, a german passenger ship.
b. an ocean liner.
a a type of submarine.
d. a passenger ship with a u-shaped hull,

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

1. senate

2.there is no diagram

3.education

we need an attachment to see what you are talking about.

i'll anser so they can have brainliest (my doubleu key is broken)