Verified Access requires a Chrome extension to communicate with the Verified Access API. While Google doesn't directly provide this extension, it offers detailed documentation and resources through the Verified Access API. Independent software vendors (ISVs) can use these resources to develop and provide compatible extensions.
Option A is incorrect because Google Play Store is for Android apps, not Chrome extensions.
Option C is incorrect because while ISVs might offer extensions, it's not the sole source. Google's documentation is essential.
Option D is incorrect because API keys are for authentication, not the extension itself.