1. B Rationale: Socio-economic groupings are often the basis on which markets are segmented, so that products/services and marketing messages can be targeted appropriately (to people with the right levels of income, aspiration, education and so on).
You might have paused over Human.Resources, because social class includes education factors, but the data cannot be used to predict skill availability.
2.A Rationale: Procurement, technology development, HR management and infrastructure are support activities.
Inbound and outbound logistics, operations, marketing/sales and service are primary activities.
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