If the city council institutes new parking regulations, city revenues

its D.
For the following reasons.
NPReg ---> Rev increase
Premise : NPReg ---> Increase in Parking Violations
Incr. PV ---> Incr. Tickt collected.

Incr. Tick collected ---> Rev Increase.
A - Wrong reversal
B - Out of scope
C - Opinion is mentioned
D - Bingo!
E - Out of scope

The choices are quite confusing. Although i got it correct it took me sime time.

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If the city council institutes new parking regulations, city revenues will surely increase, since studies have conclusively shown that, if such parking regulations are put into effect, there is an increase in parking violations, and an increase in parking violations will result in a greater number of parking fines collected.

If the statements in the passage are true, which one of the following must also be true?

(A) Unless there is an increase in the number of parking violations in the city, city revenues will not increase. - WRONG. It's a negation which may or may not be true.
(B) If the city council institutes new parking regulations, the council will fall from favor with the citizens. - WRONG. Irrelevant and more importantly not necessary.
(C) The city council will institute new parking regulations only if an increase in city revenues can be expected to result. - WRONG. It's like A only.
(D) If the city council’s new regulations cause more parking violators to be ticketed, the city revenues will increase. - CORRECT. More violators ticketed means more violations means more revenue.
(E) Unless the city institutes a complex system of parking regulations, the city cannot expect traffic violations to increase. - WRONG.

Answer D.