Final answer:
The situation that would likely pose the greatest difficulty for a 78-year-old female with early bilateral senile cataracts is reading a book or a computer screen.
Step-by-step explanation:
The situation that would likely pose the greatest difficulty for a 78-year-old female with early bilateral senile cataracts is reading a book or a computer screen.
Cataracts cause clouding in the eye's lens and a loss of vision. Reading requires clear vision and focusing on near objects, which becomes challenging when the lens is clouded. While cataracts can be treated by replacing the lens of the eye with a plastic lens, it is important to prevent their formation by protecting the eyes from UV exposure.