a. $p - O_{2} N - C_{6} H_{4} - + C H_{2}$
b. $p - C H_{3} O - C_{6} H_{4} - + C H_{2}$
c. $p - C l - C_{6} H_{4} - + C H_{2}$
d. $C_{6} H_{5} - + C H_{2}$
Correct order of stability of above species is:

a > b > c > d

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b > d > c > a

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b > a > c > d

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c > d > a > b

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Solution

The correct option is B b > d > c > a
Mesomeric effect increase stability of product
$(b) > (d) > (c) > (a)$

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