Final answer:
The correct answer is a. New York citizens had been campaigning for years for a public park in Manhattan.
Step-by-step explanation:
The correct answer is a. New York citizens had been campaigning for years for a public park in Manhattan.
According to the passage, citizens of New York City had been campaigning for years to have a public park in Manhattan. Their efforts eventually convinced the state government to purchase 750 acres of land in 1853, which would become Central Park.