When answering this question, you can talk about the typical age or stage when children start making their own choices. Usually, children begin to make simple decisions, like what to wear or what to eat, in their early childhood, maybe around 5 or 6 years old. As they grow older, especially in their teenage years, they start making more important decisions about their studies, friends, and hobbies. You can also mention that the age can vary depending on family culture and how much independence parents allow. Giving examples of different types of decisions children make at different ages can make your answer more complete.
この質問に答えるときは、子供たちが自分で選択を始める典型的な年齢や段階について話すことができます。通常、子供たちは幼児期の早い段階、たとえば5歳か6歳ごろに、何を着るかや何を食べるかといった簡単な決定をし始めます。成長するにつれて、特に思春期には、勉強や友達、趣味についてより重要な決定をするようになります。また、年齢は家庭の文化や親がどれだけ独立を許すかによって異なる場合があることも言及できます。異なる年齢で子供たちがするさまざまな種類の決定の例を挙げると、答えがより充実したものになります。