Referring to the exhibit, you have configured iBGP between R1 and R2 using your loopbacks.
Routes from ISP 2 are not showing up on R1, and routes from ISP 1 are not showing up on R2.

What needs to be configured so that routes from both ISPs show up on both R1 and R2?

A.
Create route-maps on R1 and R2 to assign local preferences to the ISP routes.

B.
Configure OSPF between R1 and R2 to provide reachability to the ISP routes.

C.
Configure EBGP between R1 and R2 to provide reachability to the ISP routes.

D.
Create prefix lists on R1 and R2 to redistribute the ISP routes.