Which of the following is a characteristic of kingdom protista?
a.) some protists are heterotrophs, and others are autotrophs.
b.) all protists are heterotrophs.
c.) all protists are unicellular.
d.) all protists are autotrophs.

Answer is A! I took the Test!

answer: 45

explanationyou have to add as well to be it could be

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)