Answer:
the correct answer is option d) both b and c.
Step-by-step explanation:
In this question, we are asked to choose the correct answer about two balances, balance (A) and balance (B). From the options given, option a) states that balance (A) is used to measure the weight of sweets, option b) states that balance (B) is used to measure the weight of sweets, option c) states that balance (A) is used to measure the weight of gold ornaments, and option d) says that both b and c are correct.
By analyzing the options, we can see that option a) only refers to balance (A), while option c) only refers to balance (A) as well. However, option b) refers to balance (B), and option d) includes both options b) and c).
Therefore, the correct answer is option d) both b and c. Both balance (A) and balance (B) can be used to measure the weight of sweets and gold ornaments, respectively.