I think children should start learning a foreign language in early childhood, around 3 to 5 years old. At this age, kids are like sponges; they absorb everything around them, including new sounds and pronunciations. Learning a language can be part of their playtime, making it fun and engaging. Plus, starting early can help them become more fluent and develop a better accent as they grow.

I believe primary school age, around 6 to 12 years, is a good time for children to start learning a foreign language. By this age, they have developed basic literacy skills in their native language, which can help them understand a new language better. Schools can include language learning in their curriculum, and kids can learn through songs, games, and interactive activities, making it a fun experience.

I think adolescence, from 13 to 18 years, is a suitable age for learning a foreign language. At this stage, students can understand complex grammar and vocabulary. They might be motivated to learn a language for travel or cultural interests. Plus, they have access to language learning resources like apps and online courses, which can enhance their learning experience.