Answer:
Chocolate (Independent variable)
Explanation:
The independent variable is manipulative. The experimenter can manipulate it. It produces one or more results in a study called the dependent variable. It is called the independent variable because its variation doesn't depend on another variable in an experiment. The independent variable can be controlled or manipulated only by the researcher or experimenter.
For example:
Amount of water and fertilizer provide a tree. Water and fertilizer is an (independent variable) which can be manipulated by the experimenter.
Result: Height of the tree depends on water and fertilizer quantity (dependent variable) which can not be manipulated by researcher.
The correct answer is rituals.
Rituals refer to religious ceremonies and practices performed by people belonging to a religion at specific prescribed times or sequences. For instance, Christians celebrate Christmas and Easter at certain prescribed times of the year, where they celebrate the birth and Resurrection of Jesus Christ. Similarly, Muslims chant certain prayers, fast and bow a fixed number of times at prescribed times of the day.