pls mark as brainlist
Explanation:
The law of substitution is also known as the law of equi-marginal utility or the law of maximum satisfaction. ... According to this law, if a consumer is to use all the available resource in the consumption of a single commodity then marginal utility,derived from every additional unit will decrease successively.
I’d go with C hope it helps
Answer:
D, Cholera and Dysentery
Explanation:
Colds travel through contact and air. Tetanus infects through metal.
Answer:
They fight against infections and disease.
Explanation: