Answer:
Option A. The sample that is likely to yield the most biased results is "every tenth person working for the largest corporation in town."
Step-by-step explanation:
When conducting a poll it is important to use unbiased samples, in order to get a more accurate representation of the subject that is being studied or investigating. If Valeriya wants to determine the likely voting outcome for the new town council election and she chooses every tenth person that is working for the largest corporation in town, she probably will get a biased result, as she is choosing to ask people that are part of the same community and that work for a company that most likely has interests within the council election.