Choose one word that substitutes the highlighted words.

During his solo excursion, he got plenty of time to examine his own thoughts and feelings. 

Introspect 

The word that best substitutes the highlighted words is introspect.

• Introspect means to examine one's own thoughts and feelings.
• Retrospect means to look back on the past.
• Meditate means to engage in mental exercise in order to achieve a state of calm or heightened awareness.
• Reflect means to think deeply about something.