Which type of change does NOT require a broker-dealer to send a notice to the customer?

The type of change that does not require a broker-dealer to send a notice to the customer is when there is a change in net worth. This is due to the fact that net worth is an individual's financial situation and is not inherently tied to how the broker-dealer manages the customer's account or the specifics of their investment strategy, fees, or account terms.

Changes such as those in investment strategy, fee structure, or account terms typically involve adjustments that can directly affect the services provided or the costs incurred by the customer. Therefore, these changes warrant notification to ensure that customers are kept informed about how their investments or associated costs may alter. In contrast, net worth is more personal and could fluctuate based on various external factors not related to the actions of the broker-dealer. As a result, no notice is required for changes in a client's net worth.