The core issue described is that tokens are losing their value because the client is not spending them Tokens derive their reinforcing power from being paired with backup reinforcers If the client is not motivated to exchange tokens it suggests that the current backup reinforcers may not be sufficiently preferred or varied enough According to the text the most effective initial intervention in this scenario is to increase the number of items the client is able to purchase or conduct another preference assessment to identify more valuable luxury items This aims to make the backup reinforcers more appealing thereby encouraging the client to spend their tokens and reestablish the pairing between tokens and primary reinforcement Options A and B would likely exacerbate the problem decreasing items A would offer fewer choices and decreasing token value B would require more saving neither of which encourages spending Option D is a drastic measure and unnecessary as the token economy was initially effective suggesting a modification rather than an overhaul is required