Immediately after experiencing a trauma, a client begins receiving trauma-focused therapy and continue receiving this intervention for three months. At the conclusion of treatment the client’s trauma symptoms are much less severe than at the start of treatment. From this information we can conclude that:
a. the treatment was effective.
b. the improvement may have been caused by the mere passage of time.
c. history might be the explanation for the improvement.
d. both b and c, only, are correct.