The critical path in a network is the path that?

Critical path is the sequential activities from start to the end of a project. 

My answer is 

C. Will elongate the project if the activities on this path take longer than anticipated.

Option C is the right choice

F. Is the longest continuous path of the project

In my opinion option - C is most appropriate and thanks for the invite.

C. Will elongate the project if the activities on this path take longer than anticipated

Thank you. I seem Option D. Has the greatest degree of risk is good answer.

E. Has the greatest degree of risk and will elongate the project if the activities on this path take

longer than anticipated