Which of the following statements about Tertiary Sector is NOT correct?

In a developing economy, the majority of workers get employment in tertiary activity.

The correct answer is Option 3: In a developing economy, the majority of workers get employment in tertiary activity.

This statement is not correct because in a developing economy, the majority of workers are generally employed in the primary sector (especially agriculture), not in the tertiary sector. On the other hand, in a developed economy, the majority of workers get employment in tertiary activity

NCERT: "In the initial stages of economic development, larger proportion of people worked in the primary sector. In a developed economy, the majority of workers get employment in tertiary activity and a moderate proportion is employed in the secondary sector. Tertiary activities include both production and exchange. The production involves the ‘provision’ of services that are ‘consumed’. The output is indirectly measured in terms of wages and salaries. Exchange, involves trade, transport and communication facilities that are used to overcome distance. Tertiary activities, therefore, involve the commercial output of services rather than the production of tangible goods. They are not directly involved in the processing of physical raw materials. Common examples are the work of a plumber, electrician, technician, launderer, barber, shopkeeper, driver, cashier, teacher, doctor, lawyer and publisher etc. "