Final answer:
Mateo's total time for two laps is 1 minute and 30 seconds.
Step-by-step explanation:
To find Mateo's total time for two laps, we need to know his time for one lap. Let's assume that Mateo swims one lap in 45 seconds. So, for two laps, his total time would be 45 seconds + 45 seconds = 90 seconds. Therefore, the answer is a) 1 minute and 30 seconds.