Option 1 states that deities were worshipped through prayer and sacrificial rituals. This is correct because the Rig Veda describes various rituals and prayers conducted by the priests to honor and communicate with the gods.

Option 2 states that the gods are presented as powerful and could be made to intervene in the world of men through sacrifices. This aligns with the beliefs and practices described in the Rig Veda, where sacrifices were seen as a means to appease the gods and seek their favor.

Option 3 states that the gods were supposed to partake in the offerings as they were consumed by the fire. This is also correct as the Rig Veda describes the belief that the gods would receive the offerings made in the fire and be pleased by them.

Option 4 states that the sacrifices were performed in temples. This is not correct. The Rig Veda does not mention the existence of temples. The rituals and sacrifices described in the Rig Veda were performed outdoors, usually in open spaces such as sacrificial altars.

Therefore, the correct answer is option 4, and the explanation for its incorrectness is that sacrifices were not performed in temples, but rather in open spaces.