This is the 498th most frequent Thai word.
ตอบว
It seems like there might be a typo with the Thai word "ตอบว." If you meant "ตอบว่า," it means **"to answer that"** or **"to reply that."**
The word "ตอบว่า" in this sentence is used to indicate direct speech or a response denoting what the person answered after being asked.
เขาตอบว่าชอบสีฟ้ามากที่สุด
He said that he likes blue the most.
Here, "ตอบว่า" introduces the content of their collective answer or reaction.
นักศึกษาในคลาสตอบว่าโจทย์ข้อนี้ยากพอสมควร
Students in the class answered that this problem is quite challenging.
"ตอบว่า" signals the conveying of one's reply to a question.