@DrewBetts I used the formula A → B → C and then subsequently A → C to solve this question because the stimulus says that without the investment in the computer modeling technology there would not be a change in the rush-hour traffic flow, then says the financial predicament would not have been solved without the change in rush-hour traffic flow, so a logical conclusion to be made is that the computer modeling technology fixed the financial predicament.

computer modeling technology → increased traffic flow → money for city

technology → money