Correct Option: B

expedite (verb) : to make a process happen more quickly ; speed up
procrastinate (Verb) : to delay doing something that you should do, usually because you do not want to do it
experiment (Verb) : to try or test new ideas, methods, etc.; to find out what effect they have
exclude (Verb) : not to include something deliberately in what you are doing/considering
propagate (Verb) : to spread an idea, a belief or a piece of information among many people