Leur or leurs for enfants

Question

"Je parle aux enfants". Write "I speak to them.": Je ________ .leur parleJe leurs parleseIs enfants not plural so the objective pronoun is leurs? Leur would equal "un enfant"?

Accepted Answer

You are confusing 2 different things 
1 The use of 'leur' as an indirect object pronoun meaning 'them' in the lesson you linked - 
and 
2 The use of leur/leurs as possessive adjectives as per the lesson I have linked below : 
https://progress.lawlessfrench.com/revision/grammar/use-notre-nos-votre-vos-leur-leurs-to-say-our-your-and-their-possessive-adjectives

Answer

Maarten is correct. Just to give you some examples:
Je leur parle. -- I speak to them. (COI)Ça leur a fait du bien. -- That did them good. (COI)Les deux sont leurs enfants. -- Both are their kids. (Possessive pronoun, plural)C'est leur valise. -- This is their suitcase. (Possessive pronoun, singular)Ce sont leurs valises. -- These are their suitcases. (Possessive pronoun, plural)