Question

An estimate determined by market research of how many people read a single issue of a publication, such as four readers per copy, is known as the

Answer 1

Pass-along readership.

Step-by-step explanation:

An estimate determined by market research of how many people read a single issue of a publication, such as four readers per copy, is known as the Pass-along readership.

Generally, the total audience of a publication such as a journal, newspaper, magazine etc is a sum total of its active, non-active subscribers and its pass-along readership.

Pass-along readership refers to a situation where a reader doesn't buy a publication themselves but reads it a copy of the publication when the buyer is done.