What can be transferred between objects? select all that apply. 1.kinetic energy 2.heat 3. temperature 4.thermal energy for my reading it says "kinetic energy is transferred as the hot and cold liquid mix" and "heat refers to the thermal energy that is transferred between two objects"

2) Heat

Only heat can be transferred from one object to another object by the means of conduction , convection and radiation .Even if the energy is being transferred by kinetic energy that is also in the form of heat .This can simply be understood by taking the example of two balls say one ball is stationary and other one is moving ,the particles inside the moving ball is having high kinetic  energy as compared to that of stationary and when the both the balls colloid the energy is transferred in the form of heat and the other ball which was at stationary starts moving .

So,ultimately heat is transferred between objects.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.