Which balanced description matches the text on audible istiʿādhah?

Istiʿādhah, Basmalah and the Rules of Joining and Pausing

• Audible recitation is described; quiet recitation is also reported acceptable by some
• Quiet recitation is impossible
• Istiʿādhah is discussed only in prayer
• The basmalah always supersedes istiʿādhah