What is meant by the term bystander effect? O A. People can find that a group may be too large to have any cohesiveness.
O B. People tend to have more fun when they are in groups instead of being alone.
O C. Individuals tend to take more responsibility for reporting crimes than do groups of people. O D. Individuals may have difficulty describing a person who committed a crime.

maybe c? idk bc when an individual doesn't offer to help someone in an emergency situation if there are other people present.

Explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.