How can special characters be properly passed through a form using PHP's $_GET method?

Special characters can be properly passed through a form using PHP's $_GET method by encoding the special characters before appending them to the URL. This can be done using the urlencode() function in PHP to ensure that the special characters are properly interpreted and passed to the server.

```php
$special_character = urlencode("Special Character: &");
echo "<a href='process_form.php?special_character=$special_character'>Submit Form</a>";
```

In the above code snippet, the special character "&" is properly encoded using the urlencode() function before being appended to the URL in the form submission link. This ensures that the special character is passed through the form using PHP's $_GET method without any issues.