What is the base endpoint for Apex REST in Salesforce?

The base endpoint for Apex REST in Salesforce is specifically designed to handle custom RESTful web services built using Apex. When you implement an Apex REST service, the endpoint you define will be appended to the base path dedicated to Apex REST services, which is why the option that states "https://yourInstance.salesforce.com/services/apexrest/" is correct.

This structure allows Salesforce to route requests to your Apex classes designed to respond to REST API calls. By using this base path, you can efficiently create and manage custom REST endpoints that interact with Salesforce data and processes.

The other options point to different types of services or endpoints within Salesforce. For example, the webservice endpoint in the first option is intended for SOAP-based web services, while the general REST endpoint in the last option is more about the REST API that deals with standard Salesforce REST functionalities, not specifically for custom Apex REST services. The third option suggests a path associated with the Apex framework, but not directly with REST. Thus, recognizing the precise endpoint structure for different service types aids in proper integration and API management in Salesforce.