Which two practices are allowed when it comes to naming a Lightning Web Components folder...

When naming a Lightning Web Components folder and associated files, Salesforce best practices allow the name to begin with a lowercase letter and to use a single hyphen (dash) forcompound names. Whitespace and underscores are not recommended in the naming convention. This is in line with web standards for custom elements. More details can be found in the Salesforce LWC documentation on naming conventions:Salesforce LWC Naming Conventions.