Final answer:
The maximum continuous APP run time in any 1 1/2 hour period is 60 minutes, which is half of the given time period and is the logical choice given the options.
Step-by-step explanation:
The maximum continuous APP run time in any 1 1/2 hour period is 60 minutes. Since 1 1/2 hours equals 90 minutes, and the question seems to imply looking for a maximum continuous duration shorter than the entire period, the correct answer is 60 minutes (Option b). For instance, if an APP runs for the maximum time without stopping, it should not exceed half of the given 1 1/2 hour period, which would be 45 minutes. Therefore, 60 minutes is the most logical choice provided by the options as the maximum continuous run time that doesn't exceed the total period.