I researched and I believe the answer is both 2 and 4.
Two sources of light in a kitchen would be Ceiling or wall-mounted fixtures.
Holly's chimps' behaviors were different from the rest of the troupe because they were separated from their mothers and a healthy environment early in their lives.
<h3>What did Holly's chimpanzee do?</h3>
The fact that chimpanzees were able to adopt this behavior, according to the researchers, is reason enough to suspect that dance among humans was a process developed in several stages, which initially may not even involve music. As with Holly and Bahkahri, it was perhaps a behavior first practiced by groups of proto-humans in stressful situations.
With this information, we can conclude that the Holly's chimpanzee are serving as a study for human behavior.
Learn more about human behavior in brainly.com/question/7716152
Anorexia is an eating disorder where people obsess about their weight (not eating, throwing up, eating very little). The people who have it try to maintain a low body weight by not eating, hardly eating, or working out a lot. Not everyone who has this is bone skinny. They must just be trying to lose or maintain a weight in ways that aren't very safe. Bulimia is when someone is very skinny, abnormally. It is an eating disorder marked by binging to avoid weight gain. It is an obsessive desire to be skinny or lose weight. Both can lead to serious health risks