The answer would be:
A. Mysterious self.
Here's is more about Johari's Window:
This is a model that helps understand how you communicate with others. It is divided into 4:
Open self - This refers to things about you that you and others know.
Hidden self - This refers to things about you that you already know but others do not.
Blind self - This refers to things about you that you do not know but others observed.
Unknown self - Things about you that you and others have yet to discover.
C. He could suffocate from lack of oxygen in his blood.
Given the statement that hemoglobin (used to transport oxygen throughout our body) is more attracted to carbon monoxide, it is highly likely that most, if not all, the hemoglobin in a human body will be bound to carbon monoxide instead of oxygen when a person inhales too much carbon monoxide. This results in a lack of hemoglobin carrying oxygen to the cells of the body. Oxygen deficiency occurs.
Organisms with more genetic variation are more likely to survive because if something changes in their environments, then they have a larger possibility to survive the changes.
Answer:
In the mentioned case, the statement that people who exercise for an hour may have lower levels of cholesterol is a hypothesis, and the cholesterol levels in the experiment would be the dependent variable.
Explanation:
A hypothesis is a suggested statement, that is, based upon the previous information, and is used as an initiation point in a scientific investigation.
Any scientific experiments comprise two variables, that is, dependent and independent variables. The independent variable refers to the variable, which is controlled or modified in a scientific experiment in order to determine its influence on the dependent variable.