When sales are made in a local walmart, the sales data is sent to walmart headquarters where the data are used to build a picture of the buying habits of people who shop at individual walmarts across the nation. the use of makes this possible
a) pos systemsb) social shoppingc) e-commerced) e-menuse) direct selling

Read the following paragraph, and choose the best revision for one of its sentences.dr. blake is retiring at the end of the month. there will be an unoccupied office upon his departure, and it is big in size. because every other office is occupied, we should convert dr. blake’s office into a lounge. it is absolutely essential that this issue is discussed at the next staff meeting. (a) because every other office is occupied, it’s recommended that we should convert dr. blake’s office into a lounge. (b) because every other office is filled, we should convert dr. blake’s office into a lounge.