In your laboratory, you examine a vial of freshwater from a local pond. You notice several unfamiliar small (less than 1 millimeter in length) animals and decide to study them. You observe that the animals have a coelom, eat microscopic food particles, reproduce by parthenogenesis, and have offspring that do not undergo any larval stages. What else would you expect to observe about this organism?

First, we will see its body structure and collect more information about it. Second , we will see the mode of reproduction i. e. sexually or asexually.

Explanation:

We will observe structure of the body and cell. If this organism is eukaryotic and no cell wall so we can say that it belongs to kingdom animalia. We also observed its mode of reproduction i. e. sexual reproduction or asexual reproduction such as fragmentation, binary fission etc.

they deliver oxygen to the blood

the answer for this question would be d. glaciers