A person who is near sighted will have the most trouble reading

The correct option is C a street sign across the street
A near-sighted person is able to see the near objects clearly but is not able to see the objects which are far from the eyes. In this defect, the image of the far object is formed in front of the retina.

Thus, the person will not have any problem reading a newspaper, watching a mobile screen, or reading the menu card in a restaurant. But the person can not see a street sign clearly as it is located far from him.