Practitioners teach clients that negative thoughts such as "i'm worthless" are merely thoughts, not facts, while encouraging them to accept and tolerate the full range of their feelings, and act in keeping with their goals and values.
a. acceptance and commitment therapy
b. dialectical and behavioral therapy
c. avoidance and commitment therapy
d. dissonance and commitment therapy

The answer is Acceptance and commitment therapy (ACT).

Explanation:

Acceptance & Commitment Therapy (ACT) model teaches the patient  or person some mindfulness skills to aid the individuals live and behave in the way which is consistent with personal beliefs while developing psychological flexibility.Acceptance is not an objective of ACT but a process of encouraging the action which will lead to positive consequences.ACT is an creative form of  behaviour and cognitive therapy that has built upon the powers and shortcomings of traditional cognitive-behavioural therapy.ACT has been used productively in  the treatment of workplace stress,social anxiety disorder,depression,obsessive compulsive disorder & psychosis.It is also used in the treatment of medical conditions such as chronic pain, substance abuse & diabetes.

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport