Correct Answer  Option 4 : Energy transfer is a point function
Explanation:
First Law of Thermodynamics for a closed system undergoing a process neglecting kinetic and potential energy.
δQ = dU + δW
Work done on the system = sign convention is ve
Work done by the system = sign convention is +ve
Heat or energy transfer to the system = sign convention is +ve
Heat or energy transfer from the system = sign convention is ve
Path functions:

Path functions are defined as the thermodynamical variables which depend on the way/path in which the thermodynamical system achieved the initial and final states.
 The differential of path functions is inexact.

Heat, Energy transfer, work and entropy generation are path functions.
Point functions:

Point functions are defined as the thermodynamic variable which depends on end states only i.e. initial and final states. They do not depend upon the path followed.
 The differential of point functions is exact.
 Pressure, temperature, volume, entropy, enthalpy etc are point functions.