The percentage of homes in a given area that are watching television during a specific time period is referred to as:. A. households using television. B. ratings point. C. program rating. D. share of audience. E. total audience.

A. households using television

Explanation:

Households using television is a term used by Nielson Media Research to represent the total number of households that have their televisions on in a particular area compared to the total number of houses with televisions.

For example this can be calculated in a one hour period to see the percentage of households that watch television within that time frame.

Rating on the other hand calculates number of households watching a particular programme.

The formula for this is

Household using television = Rating ÷ Share

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.