Which of the following is NOT a primary activity?

None of the above.

The correct answer is option 4: None of the above.

All the given activities are primary activities.

NCERT: Primary activities are directly dependent on environment as these refer to utilisation of earth’s resources such as land, water, vegetation, building materials and minerals. It, thus includes, hunting and gathering, pastoral activities, fishing, forestry, agriculture, and mining and quarrying.