CompTIA A+ 220-1101 (V14) Practice Question

The correct answer is that the email client's security settings are configured to block remote images. Most email clients, including Outlook and webmail services like Gmail, have a default setting to block externally hosted images for security and privacy reasons. This feature prevents tracking pixels from confirming that an email has been opened and protects against potentially malicious content.

The other options are less likely. A host-based firewall blocking the HTTP port would likely affect all web browsing, not just images in a single email. While a corporate email proxy server can be configured to strip image content, it is a less common cause for a single user's issue than their local client settings. Lastly, the web browser's security settings would not affect a dedicated desktop email client and are typically secondary to the webmail application's own settings when using webmail.