Concept:Spelling follows standard English rules for the word meaning relating to quantity.Explanation:Compare each option to the correct spelling "Quantitative".Option A "Quantetative" has an extra 'e'.Option B "Quantitativ" is missing the final 'e'.Option C "Quantitetive" has an incorrect 'e' after 't'.Only option D "Quantitative" matches the standard spelling.Answer:D. Quantitative