A software development company is managing a project to develop a new mobile application. The project team consists of software developers, designers, quality assurance testers, and project managers. The project manager understands the importance of meeting employees' needs to motivate and engage team members effectively. In project human resource management, which level of Maslow's Hierarchy of Needs focuses on fulfilling employees' need for recognition, respect, and a sense of accomplishment?
a) Esteem needs
b) Physiological needs
c) Social needs
d) Safety needs