Final answer:
To ensure a completed and accurate proposal by Friday, options B and C of reviewing past proposals and consulting with finance partners are highly effective, while option D of consulting a team lead is moderately effective. Option A, progressing without revision, is the least effective.
Step-by-step explanation:
To ensure a completed proposal by Friday, it is vital to choose effective strategies. Option B, looking at similar past product proposals to develop better estimates and option C, meeting with finance partners to refine cost estimates can be rated as highly effective. These approaches draw on existing data and expertise to create more accurate estimations.
Option D, asking your team lead for their estimate of what the cost should be, could be considered moderately effective, as it utilises the experience of a superior but is less comprehensive than a collaborative effort. On the other hand, option A, moving forward with the proposal as-is to ensure you meet the deadline, might be slightly effective as it adheres to the timeline but risks accuracy and thoroughness by not incorporating feedback or revisions.