Answer:
An Unconditional Positive Regard (UPR).
Step-by-step explanation:
Unconditional positive regard (UPR) is a term used in client-centered therapy and can be credited to humanistic psychologist Carl Rogers. The practice of unconditional positive regard refers to accepting and respecting others as they are without judgment. It does not require that you love the person. it simply means that you accept them and respect their opinion whether you like them or not.
From the question, we are told that Mark and Jessica have a caring, accepting and non-judgemental attitude towards each other, this shows that they have an Unconditional Positive Regard for one another.