Amineral is classified as an ore as long as
a. it’s rare and valuable
c. it’s profitable and useful
b. it can be used for jewelry
d. it’s solid and natural

The answer is C. It's profitable and useful

An ore is a type of rock that contains a specific amount of minerals that have an economic value, such as an iron ore, manganese ore, gold ore, Lead ore, etc

Basically any mineral as long as it can be sold

Along with the credits thing it could also affect your health in a type of way. you need to get out the house or off the computer and interact with people. if you stay taking online classes and are not going outside and socializing that could affect your health or your mind. your mind will start to form into you being alone and you would want to be alone over anything. so public or private school would be good because there is people around you to and support you.