The Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) is a government initiative aimed at improving irrigation and water management practices in agriculture. The objective of the PMKSY is to provide a sustainable solution for increasing agricultural productivity through efficient water use.

Option 1 states that the objective of the PMKSY is to achieve convergence of investment in irrigation at the field level. This means that different sources of funding for irrigation projects will come together to ensure better utilization and coordination.

Option 2 states that the objective of the PMKSY is to expand the cultivable area under irrigation. This means that the aim is to provide irrigation facilities to more agricultural land to enhance productivity.

Option 3 states that the objective of the PMKSY is to improve on-farm water use efficiency to reduce wastage of water. This means that the focus is on encouraging farmers to adopt water-saving techniques and technologies to minimize water wastage.

Option 4 states that the objective of the PMKSY is to protect farmers against crop failure due to natural calamities. This option is not correct as it is not one of the objectives of the PMKSY. The scheme primarily focuses on irrigation, water management, and improving water efficiency rather than providing insurance or protection