While counting the number of objects in a set, a child counts few objects twice. Which pre-number concept needs to be strengthened in the child?

Correct option is A

When a child counts some objects twice while counting a set, the pre-number concept that needs to be strengthened is One-to-one correspondence
One-to-one correspondence is the understanding that each object in a set is assigned exactly one number and vice versa. Counting each object once and only once is a crucial aspect of developing one-to-one correspondence skills.