Answer: C) Calm and peaceful.
Explanation: Imagery is a literary device that consists in the use of figurative language or detailed descriptions in order to evoke the senses of the reader and to create a mental picture. In the given passage the use of imagery such as "the brightly colored flowers that smiled up at her," "she watched the clouds meander across the sky, imaging she was weightless and free," etc, creates a calm and peaceful mood.