Physical Quality of Life Index (PQLI) was developed by:

1. A

   Morris D. Morris

   (a) Morris D. Morris. The Physical Quality of Life Index (literacy, infant mortality, life expectancy at age one) was developed by sociologist Morris David Morris. (a) Official key.

2. B

   UNDP

   (b) UNDP. UNDP publishes the Human Development Index, a different composite (1990 onward).

3. C

   Mahbub-ul-Haq

   (c) Mahbub-ul-Haq. With Amartya Sen he shaped the HDI, not PQLI.

4. D

   None of the above

   (d) None of the above. Morris is already named in (a).

Summary. Official key is (a). PQLI is Morris D. Morris’s index. UNDP and Mahbub-ul-Haq belong to the later HDI story.