International Labour Organization's Convention 138 and 182 are related to

1. A

   Child labour

   (a) Child labour. (a) Official key: ILO Convention 138 is the Minimum Age Convention; Convention 182 is the Worst Forms of Child Labour Convention. Both concern child labour, which is the stored key.

2. B

   Adaptation of agricultural practices to global climate change

   (b) Adaptation of agricultural practices to global climate change. That is not the subject of C138 and C182. This is not the key.

3. C

   Regulation of food prices and food security

   (c) Regulation of food prices and food security. ILO child-labour conventions are not food-price treaties. This is not the key.

4. D

   Gender parity at the workplace

   (d) Gender parity at the workplace. Equal remuneration and discrimination conventions are a different ILO cluster (e.g. C100, C111). This is not the key.

Summary. Official key is (a) Child labour. C138 sets a general minimum age; C182 targets slavery, trafficking, child soldiering and hazardous work. Climate, food prices and workplace gender parity are other policy fields. Honour the stored letter (a).