Please help, solve the 3rd question

Which statement about the stamps is correct?

Evaluate this exponential expression,8. (2 + 3)2 – 42

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance