Stress And Strain

Mental stress typically arises from psychological pressures and emotions such as anxiety, frustration, and impatience.
- Joyful is a positive emotion, and it does not cause mental stress.
- Happiness is also a positive feeling and not a form of stress.
- Optimism represents a positive attitude and is generally associated with lower levels of mental stress.
However, Impatience is a state of mind where a person feels a sense of urgency or frustration, which can lead to mental stress. It is a reaction to delays or the inability to control situations, and thus, it is an example of mental stress.
Therefore, the correct answer is Impatience.

Stress is the force exerted per unit area on an object. The term mental stress refers to the psychological strain or pressure experienced by an individual. It is the pressure resulting from various internal or external factors, such as workload, emotions, or anxiety.
The correct type of strain corresponding to stress in a psychological context is mental strain.
Stress, in a physical context, refers to mechanical stress, but when we focus on psychological aspects, it refers to mental stress. Therefore, the correct answer is Mental strain.