Young children can easily lose reading skills during the summer vacation without ( ) A. practice B.

Young children can easily lose reading skills during the summer vacation without ( ) A. practice B. discussion C. homework D. education

The correct answer is A. practice.

The sentence would read: "Young children can easily lose reading skills during the summer vacation without practice."

Practice is the most suitable word because it directly addresses the need for regular engagement to maintain or improve a skill, such as reading.