Read the given passage carefully and answer the question that follows.

Rooftop gardening started becoming fashionable in crowded urbanscapes such as New York more than a decade ago, as an expression in sustainability. While different cities need to adapt their gardening efforts according to their weather, this trend caught on globally, prompted in part by the fear of pesticides in commercially-grown produce. Some of the obvious advantages of having such gardens in India include the cooling of the rooftop and the house below, encouraging practices such as composting and rainwater harvesting, and of course the luxury of enjoying a green space in congested cities.

Which of the following best summarises the given passage?