A developer is working on a project based on core components. The client requests that text pasted inside the Text component should be stripped of all styling and formatting. The developer needs to override RTE plugin implementation and change the default paste (CTRL+V) behavior. Which paste option should the developer add to achieve this?

To ensure that text pasted inside the Text component in AEM is stripped of all styling and formatting, you need to override the RTE (Rich Text Editor) plugin implementation and change the default paste behavior. The correct option to achieve this is defaultPasteMode=plaintext. Steps to configure the RTE plugin for plain text pasting: Locate the RTE Configuration: Find the existing configuration for the RTE or create a new one in the /apps directory of your AEM project. Modify the Plugin Configuration: Add or update the configuration to include the defaultPasteMode parameter. The configuration might look something like this:
{
"jcr:primaryType": "nt:unstructured", "features": "[text]", "defaultPasteMode": "plaintext"
}
Apply the Configuration: Ensure that this configuration is applied to the Text component. This typically involves updating the component dialog or design dialog to reference the updated RTE configuration. Test the Configuration: In the AEM author instance, open the page with the Text component and paste text using CTRL+V. The pasted text should now be stripped of all styling and formatting, adhering to the plaintext mode. By setting defaultPasteMode to plaintext, you ensure that the RTE only accepts plain text input, removing any formatting that might come from external sources.
Reference: AEM Rich Text Editor (RTE) Documentation Configuring the Rich Text Editor in AEM