When deciding which activities to speed up in order to crash a project schedule, two questions must be asked: _________ and __________. a. Which activities have float?; which activity costs the least on a per-day basis to speed up? b. Are my most skilled resources available?; which activities are on the critical path? c. Which activities are on the critical path?; which critical path activity costs the least on a per-day basis to speed up? d. Which activities can I overlap by using time leads and alternative dependencies?; which work packages can I remove to reduce project scope?The cost management plan includes forecasting and refining cost estimates of all the project activities throughout the duration of the project, and it is integral to the cost management planning process. This plan contains descriptions, procedures, and responsibilities for all of these EXCEPT: a. cost estimating. b. budget determination. c. resource roles and responsibilities. d. cost control