Final answer:
A 7-year-old participating in religious activities is in the Intuitive-Projective faith stage of James Fowler's Stages of Faith Development, influenced by the faith community and characterized by a fantasy-filled way of thinking.
Step-by-step explanation:
A 7-year-old child attending a Roman Catholic Mass and engaging in the rituals, such as singing the opening song, is demonstrating behaviors associated with James Fowler's Stages of Faith Development. According to Fowler, the stage of development this child is experiencing is Intuitive-Projective faith, which is characterized by a fantasy-filled, imitative phase influenced by examples, moods, actions, and stories of the visible faith community, particularly parents or other adults. At this stage, the child's perception is not defined by logical thought processes but rather by imagination and perception.