The correct answer is A. distant objects.
A telescope is an optical instrument that uses lenses or mirrors to make distant objects appear closer. Telescopes are used for a variety of purposes, including astronomy, navigation, and surveying.
Option B is incorrect because telescopes are not used for viewing near objects. In fact, telescopes can make near objects appear smaller.
Option C is incorrect because telescopes are not used for viewing small objects. In fact, telescopes can make small objects appear larger.
Option D is incorrect because telescopes are not used for viewing living cells. In fact, microscopes are used for viewing living cells.