Final answer:
Neandertals likely practiced a form of religion evidenced by intentional burials, use of red ochre, beads, and possibly placing flowers in graves as part of burial rituals.
Step-by-step explanation:
Possible evidence of religion in Neandertals includes intentional burials, red ochre and beads in graves, the Flower Burial Hypothesis at Shanidar 4, and potentially the placement of household items in graves. Neandertals may have had spiritual beliefs or practices similar to animism, where spirituality exists in people, objects, and natural phenomena. The practice of intentional burials at sites such as Shanidar 4 suggests that they likely had belief systems involving rituals related to death and possibly an afterlife, as evidenced by pollen analysis which proposes that flowers were placed in graves.