Religions that place a strong emphasis on ancestor worship are common in:

The correct answer is A. Groups in which land or animals are inherited.

Ancestor worship is often found in societies where lineage and heritage are significant for inheritance and maintaining family ties. Such groups tend to honor their ancestors to strengthen these familial connections and ensure the well-being of current generations. This practice is less common in early state societies, egalitarian hunter-gatherers, and post-industrial societies, where different values and social structures prevail.