1. The problem asks for the least time from the stem-and-leaf plot of task completion times. 2. A stem-and-leaf plot organizes data by place value. The "stem" represents the tens place, and the "leaf" represents the ones place. 3. To find the least time, look for the smallest stem and then the smallest leaf in that stem. 4. The stems are 5, 6, 7, 8, and 9. The smallest stem is 5. 5. The leaves for stem 5 are 8 and 9, representing 58 and 59 seconds. 6. The smallest leaf in stem 5 is 8, so the least time is $58$ seconds. Final answer: The least time is 58 seconds.