Which events could cause the change in supply shown on this graph? Check all that apply.
A producer goes out of business.
O A new company joins the marketplace.
A natural disaster causes production to drop.
O A company begins to produce more goods.

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 In the context of personnel policies, the relationship between the company and John in which both sides understand that both the employer and the employee have the right to end their relationship at any time they desire means that it  is based on the Employment-at-will policy.
It is a labor law for contractual relationships in which an employee can be dismissed by an employer for any reason and without warning, as long as the reason is not illegal.