Answer:
a. hunting and gathering societies
and
d. pastoral societies
Step-by-step explanation:
fishing societies and horticultural societies are not nomadic, they don't change or move their shelters periodically. and their resources usually don't get clustered. that is why they are not nomadic.
But pastoral societies and hunting and gathering societies move their shelter periodically because their resources are clustered.
and as they migrate, they abandon their original houses and built new shelters, which means they have few shelters.