Which ISML method call correctly renders the customLandingPage template?

The method that correctly renders the customLandingPage template is identified as the right choice because it utilizes the proper casing and method syntax specific to ISML (Internet Store Markup Language) in Salesforce B2C Commerce. The correct function to invoke is ISML.renderTemplate, which is specifically designed to render ISML templates.

The first part of the correct method call, ISML.renderTemplate, indicates that it is a method call to render a template, and it is followed by the path to the template. The path provided follows the appropriate structure, denoting the cartridge, directory, and template name. In Salesforce B2C Commerce, it's essential to reference the template paths accurately to ensure that they are found and rendered correctly.

The other options fail to meet the required syntax or casing. For example, slight deviations in casing can lead to calls that do not execute as intended. This highlights the importance of following the specific conventions outlined in the Salesforce B2C Commerce documentation, which dictates how method calls should be structured and formatted.