Answer:
A. Substance #2 because it has a higher melting point, so the molecules have a strong attraction to one another.
Step-by-step explanation:
An intermolecular force is like an attraction, a weak intermolecular force means that the atoms separate faster, therefore atoms in a strong intermolecular force take longer to separate.
Although we don't know the substance we see 2 different melting points:
10 degrees Celsius and 100 degrees Celsius
a higher melting point means that it takes longer for the atoms in that substance to separate therefore that means that they have a strong attraction which makes statement A correct
hope that helps :)