Psychologists refer to a high ratio of positive to negative feelings as:

The answer is subjective well-being. The Tripartite model of subjective well-being or as called as SWB is a theory developed by Diener which illustrate how people experience the quality of their lives and include together with emotional reactions and cognitive judgments. The concept that encompassed by subjective well-being comprises positive and negative effect, happiness, and life contentment.

Ibelieve that the answer is (a).

Yes all of them are right