Step 1: Understanding the Concept:
In the intricate system of the Vedic Sacrifice (Yajna), the ritual performance is a collective effort involving four primary classes of priests. Each class is specifically trained in one of the four Vedas. This division of labor ensures that every aspect of the ritual—recitation, manual performance, singing, and supervision—is handled by an expert. This system is known as the Chatur-hotri system. Understanding these roles is fundamental to Vedic liturgy and Brahmanical studies.
Step 2: Detailed Explanation of the Roles:
1. Hota (A): The Hota is the priest of the Rigveda (II). His primary responsibility is to recite the Riks (hymns) of the Rigveda. Through these recitations, he 'invites' the various deities to the sacrificial altar (Vedi). He must have perfect mastery over the pronunciation and the complex systems of Vedic accents (Svaras).
2. Adhvaryu (B): The Adhvaryu is the priest of the Yajurveda (III). He is the 'manual executor' of the sacrifice. While the Hota recites, the Adhvaryu performs the actual physical labor—measuring the sacrificial ground, building the fire altars (Agni-chayana), preparing the oblations, and pouring the ghee into the fire. He mutters the prose Yajus mantras that accompany each action.
3. Udgata (C): The Udgata is the priest of the Samaveda (I). His role is to sing the Samans (chants/melodies). The music of the Samaveda is considered the spiritual life-breath of the sacrifice, believed to create a harmonious atmosphere that pleases the gods and the cosmos. His chanting is particularly central to the Soma sacrifices.
4. Brahma (D): The Brahma is the priest of the Atharvaveda (IV). He is the overall supervisor and 'witness' of the entire sacrifice. He remains mostly silent, observing the other three priests. His knowledge of the Atharvaveda allows him to provide Prayashchitta (expiatory) mantras if any error or omission occurs during the ritual, thus 'healing' the sacrifice.
Step 3: Synthesis:
The matching is: A-II (Hota-Rig), B-III (Adhvaryu-Yaju), C-I (Udgata-Sama), and D-IV (Brahma-Atharva). This correspondence is the foundational structure of the Shrauta tradition.
Step 4: Final Answer:
The correct matching sequence is (1).