Which event is described in this excerpt from book 13 of homer's odyssey?

she spake, then touch'd him with her powerful wand:
the skin shrunk up, and wither'd at her hand;
a swift old age o'er all his members spread;
a sudden frost was sprinkled on his head;
nor longer in the heavy eye-ball shined
the glance divine, forth-beaming from the mind.
his robe, which spots indelible besmear,
in rags dishonest flutters with the air:
a stag's torn hide is lapp'd around his reins;
a rugged staff his trembling hand sustains;
and at his side a wretched scrip was hung,
wide-patch'd, and knotted to a twisted thong.
so looked the chief, so moved: to mortal eyes
object uncouth! a man of miseries!

a). minerva hides ulysses in a gray mist.

b). minerva gives ulysses a divine appearance.

c). minerva disguises ulysses as an old beggar.

d). minerva disguises ulysses as a shepherd.