Because people have unlimited wants and limited resources, they must a. recycle and reuse resources.
b. create more resources.
c. make choices about which wants to satisfy.
d. produce more goods and services to satisfy their wants.

a

Explanation:

Because they have a limited of thing so they have to reuse resources

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.