Answer:
Ba(ClO₃)₂(s) → BaCl₂(s) + 3O₂(g)
Step-by-step explanation:
This has the correct formulas and atoms are balanced. On each side there are 1 Ba, 2 Cl, and 6 O.
A, B, and F are wrong. They have the wrong formula for barium chlorate.
C is wrong. There are six O atoms on the left and two on the right.
E is wrong. It has the wrong formula for barium chloride.