Suppose you are in the t-shirt business. the cost of your ink supplies increases as the quantity of t-shirts produced decreases. this means that ink is a a.) revenue b.) fixed cost c.) variable cost

The correct answer would be C.) variable cost

Revenue is basically your income in a business and a fixed cost is the price on something no matter what. The cost doesn't change.

A variable cost changes with your output, in this case, the amount of T-shirts produced.

I believe it would be a variable cost. 

Do you have more info about it ? i doubt this is the answer because i don't have all the information but if trouble was brewing in a clinic maybe it was an argument as to which clinic was better or smth of that nature

Ship building industry , good luck : )