Please help me with 29 and 30

Free points + free ! if answered correctly which of these is not a good tip for passing? a. make sure you are on an area of road where it is legal and safe to pass. b. always drive at a safe speed at or below the speed limit. c. you may reduce your following distance below four seconds when passing. d. make sure there is a safe gap in traffic before you change lanes.

Working to improve the working conduit a factory is an example of

Which of the following types of stars had the smallest initial mass? which of the following types of stars had the smallest initial mass?