How long does a product's entire life cycle last today?

a. 4 weeks

b. 40 weeks

c. 4 months

d. 4 years?

The correct option is B.

A product life cycle refers to the sequence of stages which a product goes through. There are four stages of product cycle, they are introduction, growth, maturity and decline. The life cycle of a product is always associated with changes in the marketing situation. Nowadays, the a product life cycle usually lasts for about 40 weeks.