TIdentify which sampling technique was used in the following study: Law enforcement officials stop and check the driver of every fourth vehicle blood alcohol content. random sampling stratified sampling cluster sampling systematic samplinghThe tags ofdentify which sampling technique was used in the following study: Law enforcement officials stop and check the driver of every fourth vehicle blood alcohol content. the cars and trucks in parking lot are an example of qualitative variables.e distance between two flag poles is an example of a continuous variable