When leveraging a heavy object to remove a survivor, remember to:

a. stabilize the object with cribbing as you go
b. place your hands under the object to raise it
c. lift the object very rapidly and drop it to one side
d. leave the cribbing in place after removing the survivor

A

Explanation:

Because it is an heavy object you need to stabilize the object with cribbing

answer; ///it examines the interaction between genetics and culture in shaping human biology;

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.