Which of the following was not used for water storage during the primitive period?

The correct answer is glass containers, as they were not utilized for water storage during the primitive period. In ancient times, materials for storage needed to be readily available and easy to work with, which is why options such as earthen jars, wooden jars, and bamboo containers were commonly used. These materials are natural and could be easily fashioned into suitable containers using the tools available at the time.

Glass, on the other hand, required advanced techniques to create and was not developed until much later in human history. The production of glass involves high-temperature processes that were not possible until more sophisticated methods were established long after the primitive period had ended. Hence, glass containers would not have been an option for water storage during that time.