Most likely: Response #4
Least likely: Response #1
Response #1 – This response is not proactive and doesn’t show initiative. Although you need the break, your tight schedule requires you to not think about yourself and put aside your own needs until all tasks are completed. If you sit and wait for the tool, you waste a lot of expensive time, which could have been utilized to proceed with the other tasks that do not depend on the tool. The missing tool not only delays the schedule but now your break delays it as well. Additionally, you may not be seeing the bigger picture; taking a break must be approved by your manager.
Response #4 – With this response, you demonstrate responsibility and don’t make decisions by yourself about projects that involve more than one person. You show your manager that he can trust you to inform him if any delays are expected, so he can re-plan the schedule if needed.
Note that after informing your manager, you should proceed to the other tasks and not neglect them.