Answer:
(1). Doing the job as it has always been done.
Step-by-step explanation:
A control group is the group in a sample that does not contain the item being tested and is used as a reference to understand the effects of all the other category and in any legitimate experiment it is one of the two groups. The study group is the other and the group you're studying something in.
A control group is a group isolated from the rest of the pratical/research, so that the selection of the experimental variable can not affect the results.
A researcher wants to see whether she can make the typical administrative assistant job more motivating at Acme, Inc. To experimentally investigate this possibility, she randomly assigns administrative assistants to the group DOING THE JOB AS IT IS ALWAYS BEEN DONE, this is because this group would be used as a reference to the main practical the researcher wants to carry out.