Final answer:
The correct option is d) Using easy-to-understand language by an agent increases a target's trust in an expert's power, as it enhances credibility and makes information more relatable. Other tactics such as coercion or limited interaction are not effective in building trust.
Step-by-step explanation:
For expert power to be effective, the target's perception of the agent's expertise is essential. Among the options provided, using easy-to-understand language by an agent helps increase a target's trust in an expert. Clear and accessible language can make the information more digestible and relatable, enhancing the expert's credibility.
Trustworthiness in this context relates to the expert being perceived as honest, unbiased, informed, and clearheaded. Features such as the credibility of the source, the use of evidence, and the ability to present information in a comprehensible manner are crucial in persuading and gaining trust. Experts can also establish credibility by sharing their credentials or relevant experiences, and by citing reliable sources to support their points.
In contrast, forcing a target to perform a task, emphasizing compliance, or minimizing interaction are not conducive to building trust. These tactics can be perceived as coercive or as limiting the opportunities for meaningful dialogue and the assessment of the expert's knowledge and trustworthiness.