Step 1: Comprehend the Inquiry
The query requires the accurate order of the four forms of 'Abhinaya' (dramatic portrayal) as defined by Bharata Muni in the Natya Shastra, the foundational work of Indian performing arts.
Step 2: Define Abhinaya Forms
(A) Sāttvika: Manifestation of genuine inner feelings, such as tears, trembling, or perspiration. It is regarded as the most nuanced and challenging form.
(B) Āhārya: Expression through external elements like attire, makeup, ornamentation, and stage props.
(C) Āṅgika: Conveyance of expression via bodily and limb movements (`aṅga`), including gestures (`mudras`), stance, and facial expressions.
(D) Vācika: Expression through vocalization (`vāc`), encompassing dialogue, intonation, pitch, and recitation.
Step 3: Establish the Standard Sequence
Although all four types are employed concurrently in a performance, they are conventionally categorized in an order progressing from the more external and physical to the more internal and subtle. The recognized didactic and theoretical arrangement is:
1. Āṅgika (Body)
2. Vācika (Voice)
3. Āhārya (Costume/External)
4. Sāttvika (Internal Emotion/Essence)
This corresponds to the sequence of codes: (C), (D), (B), (A).
Step 4: Final Determination
The correct sequence is (C), (D), (B), (A), aligning with option (D).