Explanation
To identify X as the grandmother of Y, we need:
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Gender: X must be female (ฯ or ฯต relative to someone).
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Generation Gap: There must be exactly two generations between X and Y (e.g., XโParentโY).
Let's evaluate the options:
Option (a): ย Lย #ย Y"dataโindexโinโnode="12">X \ \epsilon \ Z \ \psi \ K \ \ย Lย #ย Y
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Xย ฯตย ZโนX is sister of Z.
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Zย ฯย KโนZ is mother of K.
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ย LโนK"dataโindexโinโnode="0">K \ \ย LโนK is father of L.
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Lย #ย YโนL is brother of Y.
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Analysis: X is the sister of Y's grandmother (Z). So, X is a great-aunt, not the real grandmother.
Option (b): ย Xย #ย L"dataโindexโinโnode="12">Y \ \psi \ K \ \ย Xย #ย L
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Yย ฯย KโนY is mother of K.
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Analysis: Here Y is in the older generation. This would make X a descendant (grandchild) of Y, not the other way around.
Option (c): ย Kย ฯย Xย ฯตย Z"dataโindexโinโnode="12">Y \ \# \ L \ \ย Kย ฯย Xย ฯตย Z
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ย KโนL"dataโindexโinโnode="0">L \ \ย KโนL is father of K.
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Kย ฯย XโนK is mother of X.
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Analysis: Again, Y and L are in older generations than X. This would make Y the uncle of X.
Option (d): ย Y"dataโindexโinโnode="12">K \ \# \ X \ \psi \ Z \ \# \ L \ \ย Y
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Xย ฯย ZโนX is mother of Z.
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Zย #ย LโนZ is brother of L.
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ย YโนL"dataโindexโinโnode="0">L \ \ย YโนL is father of Y.
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Analysis:
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Result: Since X is the mother of Y's father (L), X is definitely the grandmother of Y.
Final Answer:
Option (d) correctly establishes that X is the mother of Y's father, making her the real grandmother.
Correct Option: (d) ย Y"dataโindexโinโnode="20">K \ \# \ X \ \psi \ Z \ \# \ L \ \ย Y
