Which One of the Following Scenarios Illustrates a Stratified Random

Which one of the following scenarios illustrates a stratified random sampling procedure?

A) Putting all participants' names into a hat, and blindly drawing names from the hat.
B) Putting all female participants' names into one hat, male participants' names - into another, and blindly drawing names from each hat separately.
C) Seating all participants around square tables, and choosing participants who sit facing North (one side of each table) .
D) Making a list of all potential participants, and choosing every third person on the list.