‘Kashi Aman’ is the improved variety of

Concept: ICAR's regional vegetable research institutes release high-yielding, disease-resistant vegetable varieties under specific brand names. The Indian Institute of Vegetable Research (IIVR), Varanasi releases many of its improved varieties — including Kashi Aman — under the “Kashi” prefix, with each individually named variety belonging to exactly one crop.

Application: The name “Kashi Aman” is part of ICAR-IIVR’s Kashi-branded tomato line, distinguished by round, firm fruits (average weight 80–110 g), the Ty-3 gene for ToLCV resistance, and a cultivation recommendation for Punjab, Uttar Pradesh, Bihar, and Jharkhand.

Cross-check — the other three offered crops each carry their own separately-named (or absent) ICAR-IIVR Kashi releases:

• Cabbage: The name “Kashi Aman” is not part of any ICAR-IIVR Kashi-branded release for cabbage — IIVR has not released a cabbage variety at all; its named releases instead cover crops such as brinjal, chilli, and gourds.

• Brinjal: The name “Kashi Aman” is not part of ICAR-IIVR’s Kashi-branded brinjal line, whose releases include Kashi Sandesh, Kashi Taru, Kashi Prakash, and Kashi Komal.

• Chilli: The name “Kashi Aman” is not part of ICAR-IIVR’s Kashi-branded chilli line, whose releases include Kashi Anmol, Kashi Ratna, Kashi Abha, and Kashi Sinduri.

Since “Kashi Aman” is specifically part of ICAR-IIVR's tomato line, the correct answer is Tomato.