Which of the following can be highly subjective when monitoring time? Effort estimatesPercentage complete estimatesSchedule estimatesTime estimates

All of the options mentioned - Effort estimates, Percentage complete estimates, Schedule estimates, and Time estimates - can be highly subjective when monitoring time. This is because they all depend on individual perceptions and judgments.

1. Effort Estimates: This refers to the amount of work or effort that one believes is required to complete a task. Different individuals may have different perceptions of how much effort a task requires, making this estimate subjective.

2. Percentage Complete Estimates: This refers to how much of a task one believes has been completed. Again, different individuals may have different perceptions of how much of a task has been completed, making this estimate subjective.

3. Schedule Estimates: This refers to how long one believes it will take to complete a task. Different individuals may have different perceptions of how long a task will take, making this estimate subjective.

4. Time Estimates: This refers to the amount of time one believes a task will take. Different individuals may have different perceptions of how long a