IDNLearn.com is designed to help you find reliable answers quickly and easily. Get comprehensive answers to all your questions from our network of experienced experts.
The correct indefinite article for the word 'niños' is 'Un.' It signifies any member of the group.
Un is the indefinite article used before the word 'niños' as it refers to any member of the group of children. In this case, 'niños' is a plural noun, and the indefinite article 'Un' is fitting for it.