Answer:
The correct word for the blank space is: Undifferentiated Segmentation.
Step-by-step explanation:
Undifferentiated Segmentation refers to companies providing only one product to all their potential consumers. Firms do this usually while offering services that people must use regardless if it is tailor-made for them or not -e.g. water, gas, and power service. These organizations avoid the research costs that imply making market research to classify their customers.