The Human Development Report, 2013 (UNDP) focuses on various aspects of development and improvement in human well-being. Option 1 states that it does not focus on sustaining development momentum. This means that the report does indeed focus on sustaining development momentum, as it examines how to continue progress and advancements in development.

Option 2 states that it does not focus on peace and security. This is the correct answer provided in the question. The report may touch upon the topic of peace and security, but it is not a focal point.

Option 3 states that it does not focus on confronting environmental pressure. However, the report does focus on environmental challenges and the impact they have on human development. It discusses ways to address these pressures and promote sustainable development.

Option 4 states that it does not focus on managing demographic change. But, in reality, the report does examine demographic changes and their implications on human development. It explores issues such as population growth, aging populations, and migration.

In summary, the Human Development Report, 2013 (UNDP) does not primarily focus on peace and security (option 2), but it does focus on sustaining development momentum, confronting environmental pressure, and managing demographic change.