Within India's agrarian structure "matrix event" is a term associated with:

Farmers suicides

The correct answer is Option (1) - Farmers suicides.

While farmers in India for centuries have periodically faced distress due to drought, crop failures, or debt, the phenomenon of farmers’ suicides appears to be new. Sociologists have attempted to explain this phenomenon by looking at the structural and social changes that have been occurring in agriculture and agrarian society. Such suicides have become ‘matrix events’, that is, a range of factors coalesce together to form an event. Many of the farmers who have committed suicides were marginal farmers who were attempting to increase their productivity, primarily by practising green revolution methods. However, undertaking such production meant facing several risks: the cost of production has increased tremendously due to a decrease in agricultural subsidies, the markets are not stable, and many farmers borrow heavily in order to invest in expensive inputs and improve their production. The loss of either the crop (due to spread of disease or pests, excessive rainfall, or drought), and in some cases the lack of an adequate support or market price, means that farmers are unable to bear the debt burden or sustain their families. Such distress is compounded by the changing culture in rural areas in which increased incomes are required for marriages, dowries, and to sustain new activities and expenses such as education and medical care