The molecules in object a possess a higher average kinetic energy than those in object b. thus:
heat could transfer from object b to object a.
heat could transfer from object a to object b.
the molecules in object a are vibrating less than in object b.
the temperature of object b is higher than object a.

2nd option

Heat could transfer from object A to B

The reason : higher kinetic energy means the particles in A are moving /vibrating faster. This is a reason due to hight temperature.

Option (b) is the correct answer.

Explanation:

When two objects of different temperature are kept in contact with each other then exchange of heat energy will take place between the two objects until a dynamic equilibrium is reached between the two object.

So, heat will transfer from a hooter object to a colder object.

For example, when molecules in object A possess a higher average kinetic energy than those in object B, then heat will be transferred from object A to object B.

Thus, we can conclude that in the given situation heat could transfer from object A to object B.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.