The quality of unrefined olive oil is not actually defined in terms of acidity, yet extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality. The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.

If the statements above are all true, which of the following conclusions is best supported by them?

Premise 1) Olive oil's quality is not related to acidity
Premise 2) If amount of free Oelic acid is less in oil then quality is good
The amount of free Oelic acid is inversely proportional to Oil's quality
Premise 3) Amount of free Oelic acid is an accurate measure of oils ACIDITY

Mathematically speaking
Amount of Oelic acid ∝ Acidity {based on Premise 3}

Amount of Oelic acid ∝\(\frac{1}{Quality}\) {based on Premise 2}

therefore :- Amount of Oelic acid ∝\(\frac{Acidity}{Quality}\)

Pre-thinking :-
The more free Oelic acid, the more acidic is the oil and poor is the quality.
The less free Oelic acid the less acidic is oil and better is the quality.


Extending the same logic a little bit more
If some oil has medium oelic acid content, the acidity will be \(moderate\) and the quality will also be \(medium\).



What options matches our Pre-thinking.
C. If an unrefined olive oil is intermediate in acidity between two other unrefined olive oils, it will also be intermediate between them in quality.

THE ANSWER IS C