Which of the given solids is isotropic

The same question, asked 2 times: 2 May 2023 S2, 19 Apr 2025 S1. Every wording below, oldest first.

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Question 1
2 May 2023 S2
73 $Which from following solids exhibits isotropic properties?$
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Question 2
19 Apr 2025 S1
67 $Which from following solids is isotropic?$
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