Joan was placed in charge of planning her sorority spring formal dance. If she thought she should hire the same band that played at last year’s dance because of how much everyone enjoyed the band, Joan could be considered to be encountering the barrier to effective problem-solving.

Unnecessary constraints

Explanation:

Unnecessary constraints is when people place a mental block to solving problem. They assume irrelevant information is causing distraction for a solving the problem at hand. Such is what Joan is facing.

answer; ///it examines the interaction between genetics and culture in shaping human biology;

because this was the year that the state of israel was formed