Based on the clue 'a disease caused by a lack of vitamin c without th...', what is the answer?

Based on the clue 'a discount is deducted from the price before purch...', what is the answer? What is referred to by 'a discount on shamu'? What is referred to by 'a discriminating gumshoe'? Based on the clue 'a discussion process called north of falcon determ...', what is the answer? Based on the clue 'a disease that breaks out in the netherlands seat ...', what is the answer? Based on the clue 'a disease that comes goes quickly is acute while ...', what is the answer? Based on the clue 'a disembodied head or pumpkin was thrown at this p...', what is the answer? Based on the clue 'a disguised hole acting as a trap or any potential...', what is the answer?