A noun becomes a compound noun when it combines with another noun using the conjunction ‘and
’ and is plural in number per se.
For example: There is a brother and a sister in this class, is wrong because, a sister and a brother put together becomes a compound and plural noun entailing a plural verb. The correct version is ‘There are a sister and a brother in this class.’ Hence You can dump A and D.
B is the correct one; here ‘that
’ is the subject of the subordinate clause; ‘that
’ stands for both the laws and the word ‘each
’ indicates that the laws individually and jointly are valid and consistent.
C is wrong because of using the unidiomatic ‘both of which are each’
. Each is an unnecessary intrusion
E is wrong becos of saying that the laws are each valid ‘or
’ consistent. Valid ‘or
’ consistent distorts the intended meaning of the original passage.
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