1. **Stating the problem:** We analyze the motion of a lift based on the graph showing floor number vs. time. 2. **Understanding the graph:** - From 0 to 15 seconds, the lift moves up from floor 0 to floor 8. - From 15 to 30 seconds, the lift stays stationary at floor 8. - From 30 to 40 seconds, the lift moves down from floor 8 to floor 6. - From 40 to 45 seconds, the lift stays stationary at floor 6. 3. **Checking each statement:** - "It was in motion for a total of 25 seconds." The lift moves from 0 to 15 seconds (15 seconds) and from 30 to 40 seconds (10 seconds). Total motion time = $15 + 10 = 25$ seconds. This is true. - "It was stationary for 20 seconds at the 8th floor." The lift is stationary at floor 8 from 15 to 30 seconds, which is $30 - 15 = 15$ seconds, not 20 seconds. This is false. - "It took 10 seconds to come down to the 6th floor from the 8th floor." The lift moves down from floor 8 to 6 between 30 and 40 seconds, which is $40 - 30 = 10$ seconds. This is true. - "It was stationary for 15 seconds at the ground floor." The lift is at floor 0 only at time 0 and immediately starts moving up, so it is not stationary for 15 seconds at the ground floor. This is false. 4. **Final conclusion:** The true statements are: - It was in motion for a total of 25 seconds. - It took 10 seconds to come down to the 6th floor from the 8th floor. Hence, the correct options are the first and third statements.