I don't understand question C and D I don't get it please explain it to me simply, and I've asked it to chatgpt, If you use chatgpt to respond to me I WILL downvote your response. IDK how much it damages you but i will do it. Give me a proper answer if u don't know it, don't waste my question.

a) Based on the given information regarding the activities for the project, the project length = weeks. b) The total cost required for completing this project on normal time = c) For reducing the duration of the project by one week, the activity that should be crashed first is activity The cost of the project based on the first activity selected for crashing will increase by $80. d) The maximum weeks by which the project can be reduced by crashing = weeks. Total cost of crashing the project to minimum (or maximum weeks possible) =$1,470