Glossophobia is the fear of public speaking or speaking in general. The term comes from Greek 'glossa' (tongue/language) and 'phobos' (fear). It's considered the most common phobia, affecting up to 75% of people to some degree. This fear can manifest as anxiety, sweating, trembling, or voice difficulties when speaking before audiences. The option C has a typo ('7.' prefix) but correctly identifies the fear.