What does the 4-1 rule state?
A. for every four images posted, post one video
B. for every single piece of self-promotional content posted, share four pieces of content from others
C. for every four pieces of self-promotional content posted, share one piece of content from others
D. for every single piece of self-promotional content posted, use exactly four hashtags
E. none of these options

B. for every single piece of self-promotional content posted, share four pieces of content from others.

Explanation: The 4-1 rule states that for every single piece of self-promotional content posted, share four pieces of content from others. The rule is applied to the structuring of social media content as it helps achieve an ideal ratio of original posts, engagement and self-serving posts for a business. As a result, it ensures a balance is struck between promoting one's own business and the use of social media in connecting with others.

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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