The specialization by individuals or groups in the performance of specific economic activities is
a. the division of labor.
c. urbanization.
b. a barter.
d. mechanical solidarity.

The specialization by individuals or groups in the performance of specific economic activities is "the division of labor."

Division of labor, the separation of a work procedure into various undertakings, with each errand performed by a different individual or gathering of people. It is frequently connected to frameworks of large scale manufacturing and is one of the essential sorting out standards of the sequential construction system. Separating work into basic redundant undertakings dispenses with pointless movement and limits the treatment of various apparatuses and parts. The ensuing decrease underway time and the capacity to supplant experts with lower-paid untalented specialists result in lower creation costs and a more affordable last item.

dude you should crop your image so only the question shows. but   can you explain it better