Explanation:

Social support refers to the resources provided by other people that can help an individual cope with or navigate through challenging situations. It can come in various forms, such as emotional, informational, or tangible support.

Emotional support involves providing comfort, empathy, and understanding to someone in need. It includes expressions of care, concern, and validation of one's feelings and experiences. Emotional support helps individuals feel understood, accepted, and less alone in their struggles.

Informational support involves providing advice, guidance, and information to help an individual solve problems or make informed decisions. It includes sharing knowledge, expertise, and resources that can assist in addressing specific challenges or acquiring new skills.

Tangible support refers to the provision of practical assistance or resources that can directly address an individual's needs. It may include financial assistance, transportation, childcare, or any other form of concrete help that can alleviate stress and enable the individual to better cope with their situation.

Positive thinking is not considered a form of social support. It is an individual's mindset or attitude towards a situation, which can influence their perception, emotions, and behavior. While positive thinking can be helpful in promoting resilience and coping skills, it is not a direct form of support provided by others.

In summary, while emotional support, informational support, and tangible support are all forms of social support, positive thinking is not. Positive thinking is an individual's internal cognitive process, whereas social support involves external resources and assistance provided by others.