Which of the following is an example of a formal resource?

The correct option highlights doctors as an example of a formal resource because they are professionals who have undergone specific training and have obtained qualifications to provide medical care and advice. Their role is established within a formal healthcare system, which includes regulations, certifications, and structured professional organizations. This formal structure ensures that their services are recognized and reliable, making them an integral part of community health resources.

In contrast, the other options—neighbours, friends, and family members—represent informal resources. These individuals may provide support and assistance, but they lack the formal training and accreditation that define a formal resource. Informal resources may offer emotional, social, or practical support, but they do not have the same authoritative role or structured framework that characterizes formal resources like doctors.