Which of the following statements is inaccurate regarding behavioral interventions?

Which of the following statements is inaccurate regarding behavioral interventions? 

 a. Maintaining behavior over time is a greater challenge 

 b. Short-term changes in behavior are encouraging, but improved health outcomes often require prolonged interventions and follow-up 

 c. Behavioral interventions are solely designed to potentiate risky behaviors

 d. Behavioral interventions can successfully teach new behaviors