As Adler's Account Makes Clear, the Process of "Getting In

As Adler's account makes clear, the process of "getting in" may

A) be a matter of luck, as when their friendship with a neighbor turned out to be a connection to larger drug smuggling-dealing network.
B) involve writing to as many possible subjects as possible in hopes of gaining entry into their world.
C) involve careful planning and calculation and is almost never a matter of luck, as when the Adlers intentionally meet and cultivate their relation with a neighbor they know to be a dealer-smuggler.
D) require formal introductions through a network of contacts established through months of patient surveillance.