How long were american involved in world war 1

The U.S. was in World War 1 for 1 year, 7 months, and 5 days. Although, for the vast majority of 1917, America was figuring out their Draft and manufacturing runs. American troops didn't start arriving in large numbers on the Western front until February-March of 1918.

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Option A.

Explanation:

Affiliate, is the right answer.

In the broadcasting business, an affiliated station or a network affiliate is a regional broadcaster, controlled by an organization other than the purchaser of the system, which provides some or all of the list of radio programs or television programs of a radio or television network. Stations which provide a network's programming utilizing affiliation sustain a contractual arbitration, which may permit the network to manage some obligations that a station must conform to as part of the agreement.