Why might stores choose to list $5 items for "two for $10"?

to discourage customers from buying more than one item
to encourage customers to buy more than one item
to establish a price increase on the purchase of multiple items
to offer customers a price reduction on more than one item

In harriet's country, the ten provincial states that make up the nation hold the majority of power, with a small central government handling foreign policy and trade. harriet lives under a government best described as which of the selections listed below? select one: a. parliamentary b. federal c. confederal d. unitary