Premise: As the introduction to the Loeb edition says, In February 45 [a year before he wrote De Senectute] the death of his adored and only daughter drove him into a frenzy of writing in an effort to forget his grief.

Hypothesis: His only daughter died, which led him to write as a distraction for his grief.

Does the premise entail the hypothesis?

Available options: (a). yes (b). it is not possible to tell (c). no
(a).