
Answer:
The entry to record this transaction is a. a debit to Supplies and a credit to Cash.
Explanation:
The  supplies are an asset of the business that are recorded under the current assets. The purchase of supplies will mean an increase in the supplies  and a debit to the supplies account. The supplies are purchased for cash which means the cash will decrease causing a credit to the cash account. So, the entry to record the purchase us,
January 14  Supplies Account  $700 Dr
           Cash              $700 Cr