A nurse is assessing a client who has a cast in place for a fractured tibia. Which of the following actions should the nurse take first?

Choice A reason: Cast care education is important but not the first priority during an initial assessment. Safety and circulation come first. Choice B reason: Range of motion exercises are not appropriate for a limb immobilized in a cast. They may be used for unaffected joints. Choice C reason: Pain management is essential, but assessing for complications such as compartment syndrome takes precedence. Choice D reason: Checking capillary refill assesses peripheral circulation and helps detect early signs of neurovascular compromise, which is a priority in casted limbs.