Which type of plate boundary would be most likely to lead to above-ground volcanic activity? a. subduction b. divergent c. collisional d. transform

Witch one is it soo it the the question b.a,b,c,d

[ou.01]which of these is the most likely use of an electromagnetic wave which has wavelength shorter than microwaves but longer than visible light? o heat food safely o neat food safely o take images of bones and teeth o transmit radio and cellular phone signals o take images of bones and teeth o transmit radio and cellular phone signals o detect the location of objects which emit heat

Find the coordinates of a if b(-9,-10) is the midpoint of ac and c has the coordinates of (-1,9)