I believe the answer is: The presence or absence of music
independent variable refers to the type of variables that are not influenced by other variables. This represent the things that can be controlled by the researchers in order to ignite a certain causal relationship with the dependent variables ( the things they want to measure)
Forces that energize, direct and sustain a person's efforts are called motivation. It is also a person's drive to do a certain behavior repeatedly to achieve his wants and needs. Sometimes, a person would not stop doing something not unless they would be able to get the outcome or goal.
The correct answer to this open question is the following.
After seventy years of permanent conflicts, the current state of the Israel-Palestine conflict still has a long way to go. On May 14, 1948, Dave Ben-Gurion, with the support of Great Britain and the United States, officially established the state of Israel. This represented the creation of Israel as a country and immediately was recognized by United States President Harry S. Truman. Of course, Palestine opposed to the occupation of its territory, continuing the conflicts that have including fighting using weapons, terrorist acts, and permanent negotiations using diplomats.
Today, negotiations are stalled, big religious and ethnic differences still causing so much damage in the region, permanent aggressions are lived daily, and so much hate and pain has been the result.
The appropriate response is mirror-image perceptions. It is a corresponding perspective of each other regularly held by gatherings in the struggle; for instance, each may see itself as good and peace-cherishing and alternate as insidious and forceful.