To examine one’s own thoughts and feelings:

Meditation
Retrospection
Reflection
Introspection

The correct answer is D. Introspection.

Introspection is the examination of one’s own thoughts and feelings. It is a process of self-awareness and self-reflection. Introspection can be used to understand one’s own motivations, values, and beliefs. It can also be used to identify and address personal problems.

Meditation is a practice that involves focusing one’s attention and clearing one’s mind. It can be used to reduce stress, improve focus, and promote relaxation.

Retrospection is the act of looking back on the past. It can be used to learn from one’s mistakes, to appreciate one’s accomplishments, and to gain a better understanding of oneself.

Reflection is the act of thinking about something carefully. It can be used to understand a situation, to solve a problem, or to make a decision.

Introspection is a more specific term than meditation, retrospection, or reflection. It is specifically focused on examining one’s own thoughts and feelings. Meditation, retrospection, and reflection can all be used to facilitate introspection, but they are not the same thing.