All of the following economic activities have helped improve the economy of Georgia since it became an independent country except
a. machinery manufacturing.
c. computer technology.
b. agriculture.
d. petroleum extraction.

C. Computer technology.

Explanation:

The economy of Georgia suffered massively after the fall of the Soviet Union. But the state recovered from this impact in the mid of the late 20th century. Several economic and democratic reformations played the role in improving Georgia's economy. One of the significant reformations was the peaceful Rose Revolution.

The economic activities that helped to improve the economy of the state were machine manufacturing, agriculture, petroleum extraction, tourism, etc.

The only economic activity that did not contribute to the economic development of Georgia is computer technology.

Therefore, option C is the correct answer.