The other options are unrelated to this specific area of study:
In summary, epidemiology is the correct answer as it specifically examines how diseases spread and affect groups of people, aiming to control health problems in the population.
| 1 | Bill and Melinda Gates | i | Right to Livelihood Awards |
| 2 | Sankaralingam and Krishnammal | ii | UN Population Award |
| 3 | Prakash and Mandakini Amte | iii | Kyoto Prize |
| 4 | Peter and Rosemary Grant | iv | Magsaysay Award |