It's B because all the rest of them are required.
A channel is commonly described as the mode of communique, In simple words, we will say that T.V channels provide everyday records to the public channels.
First, He learned about the methods of communique via which he channels his feelings to others. Inside the 2nd, a channel is defined because of the method thru which precise statistics are handed to any other one. In the third sentence, a channel is described as an intermediary that connects Russia and Alaska.
The narrowest distance between mainland Russia and mainland Alaska is approximately 55 miles. but, inside the frame of water between Alaska and Russia, referred to as the Bering Strait, there lie two small islands known as big Diomede and Little Diomede.
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Theirs now context can add some info regarding the question
Answer:
Farmers needed to control the water supply because too much water or too little water would kill the crops (too much would flood the fields and too little would lead to a drought)
It's C. Shes known for refusing to give up her seat to a white male
