Step 1: Fix the goal.
SDG 10 is about reduced inequalities, so its indicators should track income gaps and unequal access.
Step 2: Check option A.
Women's seats in panchayats is about gender and governance, which belongs to SDG 5, not SDG 10. So A is wrong.
Step 3: Check option B.
The Gini coefficient measures income inequality head on, so it fits SDG 10. So B is correct.
Step 4: Check option C.
The unemployment rate for ages 15 to 59 reflects unequal access to jobs and income, and the index uses it under SDG 10. So C is correct.
Step 5: Check option D.
GDP per capita growth is about overall growth, which sits under SDG 8, not inequality. So D is wrong.
\[ \boxed{(B)\text{ and }(C)} \]