Some mollusks are nearly microscopic.
Mollusks are invertebrates and are no exception.
Some invertebrates are nearly microscopic.
What are nearly microscopic?
Options:
[a] all invertebrates
[b] planets
[c] some invertebrates
[d] remains of prehistoric life
[e] barnacles
[f] Veins and arteries.
[g] major threat to health
[h] all vertebrates