Factors that increase the vulnerability of Andhra Pradesh to natural hazards include:

Poverty and population density
Unplanned development
Environmental degradation
All of the above

The correct answer is: d) All of the above

Poverty and population density can increase the vulnerability of Andhra Pradesh to natural hazards in a number of ways. For example, people living in poverty may not have access to adequate housing or infrastructure, which can make them more vulnerable to the effects of natural disasters. Additionally, people living in high-density areas may be more likely to be exposed to hazards such as flooding or earthquakes.

Unplanned development can also increase the vulnerability of Andhra Pradesh to natural hazards. For example, if buildings are not built to withstand earthquakes, they may be more likely to collapse during an earthquake. Additionally, if development occurs in areas that are prone to flooding, it can increase the risk of flooding and damage to property.

Environmental degradation can also increase the vulnerability of Andhra Pradesh to natural hazards. For example, deforestation can increase the risk of landslides, while soil erosion can increase the risk of flooding. Additionally, climate change can make natural hazards more severe, such as increasing the intensity of storms or the frequency of droughts.

Therefore, all of the factors listed in the question can increase the vulnerability of Andhra Pradesh to natural hazards.