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Q.

Which of the following is correct for key?a. Represents the choice made between two opposite optionsb. Contains the contrasting characters generally in a pair called coupletc. In a couplet acceptance is of only one character and rejection of the other

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a

b and c

b

a and c

c

a and b

d

a, b and c

answer is D.

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Detailed Solution

The keys are based on the contrasting characters generally in a pair called couplet. It represents the choice made between two opposite options.This results in acceptance of only one and rejection of the other.
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Which of the following is correct for key?a. Represents the choice made between two opposite optionsb. Contains the contrasting characters generally in a pair called coupletc. In a couplet acceptance is of only one character and rejection of the other