The answer is c to this q
Impinge = strike (the rain fell hard on the ground)
Hope this helps!
Memorandums are important because Memos have a twofold purpose: they bring attention to problems and they solve problems. They accomplish their goals by informing the reader about new information like policy changes, price increases, or by persuading the reader to take an action, such as attend a meeting, or change a current production procedure.
