6.)-2r(8r+5)

A.)-16r^2+5)
B.)-16r^2+10
C.)-16r^2-10r
D.)-16r^2-10

HELP?

you haven't paid much attention to the solutions to your previous problems. Review the distributive property. Then you will see that

-2r(8r+5)
= -2r(8r) + (-2r)(5)
= -16r^2 - 10r