The development of contrapposto, or weight-shift, as in the Kritios Boy, seems to have been motivated by a desire to?

The answer is: dramatize the stories narrated in the decorative programs of temples and sanctuaries.

contrapposto, or weight-shift Are mostly needed in creating 3 dimensional artwork (such as statues or buildings).

In its earliest development, Such statues are used for religious purposes. They often located near temples and sanctuaries in order to dramatize the accomplishments of deceased that deemed to have contributed a lot to society (such as dead kings or generals)

Contrapposto was an Italian term especially used in visual arts to give the human figures a dynamic aspect or a relaxed appearance.

Explanation:

The term Contrapposto is also used to refer to multiple figures which are in the opposite pose to another.

Contrapposto was so important in the sculpture's development because its appearance marked the first time in Western art in which the human body was utilized to show a psychological disposition.