• CEDAW Convention:
• The Convention on the Elimination of All Forms of Discrimination against Women (CEDAW) is an international treaty adopted by the United Nations General Assembly on 18 December 1979.
• Entering into force on 3 September 1981, it is regarded as an international bill of rights for women, defining gender discrimination and establishing national action agendas.
• Correct Option: Option 2 (1979).

• Estimation of Size at 50% Maturity ($L_{50}$):
• In fisheries biology, the length at which $50\%$ of individuals in a population reach sexual maturity ($L_{50}$ or $L_m$) is modeled using the Logistic Model (Sigmoidal curve):

where $P$ is the proportion of mature fish at length $L$, and $r$ is the slope parameter.

• Correct Option: Option 2 (Logistic Model).

• Aadhaar-Based Payment System (ABPS):
• ABPS stands for Aadhaar-Based Payment System.
• digital payment mechanism developed by the National Payments Corporation of India (NPCI) and mandated by the Government of India for direct benefit transfers (DBT) to MGNREGA beneficiaries, using the beneficiary's 12-digit Aadhaar number linked to their NPCI mapper bank account.
• Correct Option: Option 4 (Aadhar-Based Payment System).

• Occupational Safety Terminology: Hazard:
• In maritime occupational health and fishing safety:
• Hazard: Any biological, chemical, mechanical, physical, or environmental source of potential harm, damage, or adverse health effect on an individual (e.g., rough seas, unguarded winches, toxic hydrogen sulfide in fish holds).
• Risk: The probability or chance that a person will be harmed if exposed to a hazard.
• Correct Option: Option 3 (Source of potential harm or danger).