During photosynthesis, a plant uses energy from the sun to break apart glucose, water, and carbon dioxide. these molecules are used to make sugar to feed the plant and the plant then releases a by -product, oxygen, that humans breathe. this example shows that:
a. energy can be destroyed in different forms and created with heat energy
b. energy is not created but transferred to different forms
c. energy is created through the use of heat
d. energy is released during a combustion reaction

B. energy is not created but transferred to different forms

Energy cannot be created or destroyed, so that leaves you with answers B and D. In the example provided, energy is transferred from the sun to break apart glucose, water and carbon dioxide to make food for a plant. 

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.