[b] loss of or decline in arable land, is the correct answer.
Many human-made and natural reasons, such as deterioration, climate change, soil restrictions, urban encroachment, and unequal land distribution, contribute to the scarcity of arable land.
What is currently the primary cause of hunger in the world?
World Poverty, Children not attending school, fewer people having access to good drinking water, and dangerous housing is just a few of the issues that poverty may bring about. It is the primary reason for hunger in the world.
All of the following, with the exception of [b] loss or shrinkage of arable land, are factors that are causing an increase in world hunger. Along with lacking access to fertile land and tools for gathering, processing, and storing food.
Therefore, Global poverty is the primary contributor to hunger.
Learn more about Global poverty from the given link.
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