tell about MLK’s speech " i have been to the mountain top" and give reasons why it was given.

Can anyone plz with this question i accidentally posted on physics it's 99 points plus this 5 ponts and will mark as brainliest link :

Which of these sentences would best express the main idea of a speech arguing that people should participate in a charity softball tournament? a) softball is a great way to get some much-needed exercise. eliminate b) the money raised by the tournament will local animal shelters. c) the tournament is a fun way to spend time with friends while a worthy cause. d) even if you don't have any softball experience, you can form a team and participate.

Which detail indicates the authors opinion on the incense that this province produces the travel of marco polo