What is the difference between "can have + past participle " and "could have + past participle"?

Which kind of narrator knows the thoughts and see all of the charters in the story

Sally rises every morning at 6: 30 am. after deep-breathing exercises, she dresses in sweats and sport shoes for a morning jog over the same paths in lakewood park. on average, her jog takes 23 minutes. the rest of her day also follows a formula. dinner is at 6: 30. at 7: 00, she turns on the tv to watch the national news. and so it goes. some say sally is a boring person. sally declares she is not at all boring, just well organized. the paragraph is organized by a. showing cause and effect. b. comparison. c. time. d. importance.

Which of the following statements from "letter from birmingham jail" does not specifically dr. king to establish credibility with the white clergymen? question 6 options: just as the apostle paul left his village of tarsus and carried the gospel of jesus christ to the far corners of the greco roman world, so am i compelled to carry the gospel of freedom beyond my own town. my dear fellow clergymen: while confined here in the birmingham city jail, i came across your recent statement calling my present activities "unwise and untimely." i have the honor of serving as president of the southern christian leadership conference, an organization operating in every southern state, with headquarters in atlanta, georgia.