Press . . . . . . . . to move the focus to the text box’s access key named textBlue.

The correct answer is: A. Alt+b

The access key is a keyboard shortcut that allows users to access a specific control or element on a web page without using a mouse. The access key is typically a single letter, and it is preceded by the Alt key. To use an access key, press and hold the Alt key, and then press the access key letter.

In the case of the text box with the access key named “textBlue”, the access key is Alt+b. To move the focus to the text box, press and hold the Alt key, and then press the b key.

The other options are incorrect because they do not correspond to the access key for the text box.