The detail that most strongly suggests that Ophelia may not have taken her own life entirely on purpose is A. Gertrude reports that Ophelia reached to gather plants and fell into the brook. This detail implies a lack of intent to die, as it describes Ophelia's accidental fall rather than a deliberate act.
It paints a picture of an accidental drowning, which is supported by the imagery of her reaching for plants, losing her balance, and the water itself contributing to her demise. The tragic imagery of Ophelia's drowning has been a focal point in various artistic representations, highlighting the themes of femininity, insanity, and the social constraints upon her character. Feminist interpretations have further explored Ophelia's madness as a form of protest against the gender stereotypes and social order of the time.
The probable question is in the image attached.