Answer:
c. Eukaryotes can be unicellular or multicellular. 
Step-by-step explanation:
Eukaryotes are organisms that have a true nucleus separated from the cytoplasm. And in the cytoplasm they have many organelles. Some classic examples of these representatives (unicellular or multicellular) are: 
- Animals 
 - Plants 
 - Protozoa 
 - Fungi 
 
And in the case of multicellular organisms, cells differentiate into specific tissues and organs, with complementary functionality to each other. What makes existence and functionality unreliable from each other.