What is the term for sons and/or daughters?

The term "Children" is the most straightforward and commonly used word to refer to sons and/or daughters. It encompasses all young individuals in relation to their parents and is universally understood in social and legal contexts. While "Kids," "Offspring," and "Progeny" may also refer to young individuals, they carry different connotations or levels of formality.

"Kids" is a more informal term and is often used in casual conversation, but it may not be appropriate in all contexts. "Offspring" is more scientific and can refer to any young from any species, not exclusively humans, which makes it less specific in this context. "Progeny" is a formal term that also might imply a broader lineage or descendants, but it is less commonly used in everyday language. Therefore, "Children" is the most accurate and widely accepted term for sons and/or daughters in both legal and casual contexts.