To reduce an app's drain on the battery, the app should do which of the following?
A. Never use any sensors.
B. Monitor to determine whether a sensor reading needs an update before it uses the sensor.
C. Shut down all activity when an app is paused.
D. Use sensors only on start up.
Answer:B
To reduce an app's drain on the battery, the app should do which of the following?
A. Never use any sensors. B. Monitor to determine whether a sensor reading needs an update before it uses the sensor. C. Shut down all activity when an app is paused. D. Use sensors only on start up.