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Thet should be used to clean things that have been used to ensure that contamination of any kind does not occur
The Dog is the subject in this sentence
It contains one dependent and one independent clause.
Answer: Option 3.
<u>Explanation:</u>
A dependent clause is also known as the subordinate clause. It is that which is a part of the sentence which adds extra information to the particular sentence of which it is a part. But it is nothing without a sentence. It can not stand without it.
On the other hand, independent clause is a clause which has a meaning itself also. In other words, it stands as an independent sentence in itself and does not need to be a part of some other sentence necessarily to make a meaning out of it.
1c
2b
3b
4b
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