Psychological Intervention Programs Are Effective in Increasing Self-Confidence,focusing Attention,energizing Effort,and

Psychological intervention programs are effective in increasing self-confidence,focusing attention,energizing effort,and enhancing athletic performance.

A) Based on the literature,this is basically a true statement.
B) Based on the literature,this is a false statement.
C) The sport psychology literature is silent on this point.
D) All of the above.