In the late 1960s, architect Charles Correa began his career as an urban planner, creating New Bombay (now Navi Mumbai), an urban area that provided housing and job opportunities for many who lived across the harbour from the original city. In the midst of overpopulated cities, he tried to create quasi-rural housing environments. In all of his urban planning commissions, Correa avoided high-rise housing solutions. _____________

The passage discusses Charles Correa’s early urban planning, especially his work on Navi Mumbai. He avoided high-rise housing and aimed to create more community-oriented, quasi-rural environments. So the sentence that follows should logically explain or expand on his alternative to high-rises, i.e., what he used instead.

Option B directly explains what he used instead of high-rises (i.e., low-rise housing).

The other options, although they might be true, do not fit well with the logical flow of the passage, and do not directly connect to the previous sentences about house designing. Hence option B is the correct choice.