Explanation:

- Option 1: Chemistry

- The ICTP Ramanujan Prize is not awarded for Chemistry.

- Chemistry is the study of substances, their properties, and interactions, but this field is typically recognized by prizes such as the Nobel Prize in Chemistry.

- Option 2: Physics

- While Physics is a core scientific discipline, the Ramanujan Prize specifically does not focus on it.

- Renowned prizes for Physics include the Nobel Prize and the Wolf Prize.

- Option 3: Mathematics

- Correct Answer: The ICTP Ramanujan Prize is awarded for excellence in Mathematics.

- Named after the Indian mathematician Srinivasa Ramanujan, this prize recognizes young mathematicians from developing countries who have conducted outstanding research.

- Option 4: Biology

- Biology focuses on the study of living organisms and is separately recognized by awards like the Nobel Prize in Physiology or Medicine.

- The Ramanujan Prize does not cover achievements in Biology.

The ICTP Ramanujan Prize encourages and highlights exceptional work in mathematics specifically.