Question

Choose the possessive adjective that can be modify to match gender and number.

Answer 1

The correct answer is:  [A]:  "vuestro" .
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Since: "vuestro"; can match number and gender;  
 (e.g. "vuestro" ; "vuestros"; "vuestra", "vuestras" ;

whereas the other answer choices given: 

"mis", "mi", "su";  can only match number —(not 'gender').
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