Brenda and jonathan have been married for 15 years. when brenda develops a potentially fatal lung disease, jonathan retires in order to care for brenda. this shows that brenda and jonathan's relationship has a high level of a) commitment b) infatuation c) fatuous love d) passion

a) commitment.

Explanation:

This shows that Brenda and Jonathan's relationship has a high level of commitment. In Robert J. Sternberg's triangular theory of love, commitment is the decision to stay in the relationship to achieve common goals and to remain in the relationship even when facing problems. As Brenda and Jonathan have a long-term commitment Jonathan's commitment to caring for Brenda is shown by his retaring to take care of her.