A) The correct word to complete the sentence is íbamos. The complete sentence would be: "De pequeño, mi familia íbamos a la casa de mis abuelos todos los domingos."
B) The statement that is not true about childcare in the Spanish-speaking world is: Families are heavily reliant on daycare centers. In many Spanish-speaking cultures, family members often take on the responsibility of caring for children, and there is often a strong emphasis on family support rather than reliance on formal daycare facilities.