A spot sale of a currency combined with a forward repurchase of the same currency is called which one of the following?

The correct answer is Forex swap

Key PointsSwap rate is the rate of the fixed leg of a swap as determined by its particular market and the parties involved. In an interest rate swap, it is the fixed interest rate exchanged for a benchmark rate such as LIBOR or the Fed Funds Rate plus or minus a spread. It is also the exchange rate associated with the fixed portion of a currency swap.
A foreign exchange swap (forex swap) is a simultaneous purchase and sale of identical amounts of one currency for another with two different value dates and may use foreign exchange derivatives. A foreign exchange swap has two legs - a spot transaction and a forward transaction - that are executed simultaneously for the same quantity, and therefore offset each other. Forward foreign exchange transactions occur if both companies have a currency the other needs. 

A forward rate is a specified price agreed by all parties involved for the delivery of a good at a specific date in the future. The use of forward rates can be speculative if a buyer believes the future price of a good will be greater than the current forward rate. Alternatively, sellers use forward rates to mitigate the risk that the future price of a good materially decreases.

A spot rate is the real-time price quoted for the instant settlement of a contract. In commodities markets, the spot rate represents the current price for the purchase or sale of a commodity, security, or currency.