c) Majority of businesses are operating in a monopolistically competitive market

Monopolistic firms are those which produce similar competitive products.Majority of the businesses are operating under this structure.During economic crisis their demand for products starts declining as the consumers faces low income.
Since this market structure works under the principle of non-price competition,they can do several things to cope up with the situation like providing offers , lowering prices etc.
For example in the case of restaurants, during crisis they tries to Market the crisis by providing door delivery service,offers , combo offers etc. They also lowers their production cost by reducing the number of labourers. Thus In order to increase the demand , monopolistic competitive firms uses price and non price strategies in business.