Ricky is the goalie for his soccer team. From information you gathered in a discussion with Ricky (and his sport coach) and from the materials you consulted (biomechanics and soccer texts), you've determined that, among other things, Ricky has to jump vertically to block the goal during a competition.   Identify the movements involved in the power phase of the vertical jump from the following list.   a. hip extension b. hip flexion c. knee extension d. knee flexion e. dorsi flexion f. plantar flexion