A positive externality a. results in an optimal level of output. b. is a benefit to the producer of the good. c. is a benefit to someone other than the producer and consumer of the good. d. is a benefit to the consumer of the good.

c. is a benefit to someone other than the producer and consumer of the good.

Explanation:

In the production process an externality is the effect of the activities not the business on the society. This can be positive or negative.

A positive externality is one in which the consumption not a produced good results in benefit to a third party other than the producer or consumer.

For example if car buyers decide to walk more often than drive it will reduce pollution in the society. This is a positive benefit to the society at large.

Or when an apple farmer plants his trees it provides nectar to the beekeeper.

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.

these are the four factors that influence enterpreneurship development

1. economic development

2. culture

3.technological development

4. education