The answer is C. 20 mins
B. setting realistic goals.
C. avoiding friends and family.
D. seeking help from a physician or medical professional.
B. Negative attitudes can't be changed.
C. There's one fundamental way of acquiring attitudes.
D. Positive attitudes can help us learn more quickly.
Answer:
C: Bicep Curl
Explanation:
A concentric contraction is a contraction where the muscle shortens when contracting. When doing a bicep curl, the bicep shortens when it contracts.