J.R. S. answered 01/15/21
Ph.D. University Professor with 10+ years Tutoring Experience
Only SO2 will have dipole-dipole interaction because it is polar whereas CO2 is not.
NOTE: there are any number of possible insertions in the 2nd blank.
CO2 is linear, SO2 is bent making CO2 non polar and SO2 polar.
Yada yada....