Final answer:
The statement that one of our primary moral duties is the development of self-respect or proper self-esteem is false. The statement is false (b).
Step-by-step explanation:
The statement that one of our primary moral duties is the development of self-respect or proper self-esteem is false.
According to Ross' theory of prima facie duties, there are five main moral commitments: duty of fidelity, duty of reparation, duty of gratitude, duty to promote a maximum of aggregate good, and duty of non-maleficence.
Self-respect or self-esteem is not explicitly mentioned as one of these duties. Additionally, the development of self-respect or self-esteem is a personal and subjective matter, not necessarily a universal moral duty.