stalled when i put into drive

What is your question?

happened 1st time this morning at my daughter's school when I was leaving. Just turned 175K miles engine turns over, but stalls when i put it into drive. i turned off radio, hvac, lights, let it idle for a few minutes and then was able to drive. is this a battery, alternator or other problem? i had front brakes replaced 1 week ago. don't want another big repair right now if I don't need one. Thank you for your help!