Explanation:

- The United Nations Development Programme (UNDP) addresses different aspects of poverty.

- Income poverty is when individuals or families lack the monetary resources required to meet basic needs such as food, shelter, and clothing.

- Human poverty looks beyond just income and considers other dimensions like lack of access to education, health care, clean water, and opportunities for livelihood.

- Option 1 focuses solely on financial constraints.

- Option 2 explores broader social and economic barriers.

- Option 3 combines both, recognizing the multifaceted nature of poverty.

- Option 4 implies none of the listed categories, which is incorrect as both 1 and 2 are valid categories of poverty recognized by UNDP.