The answer is
B, a euglena uses a flagella in order to move. Euglena is a one celled organism
under the Kingdom Protista. A flagella (or flagellum plural) is a long strand
like structure that is located in the front end part (more like a tail in front).
It flips to the left and right in order for the organism to move. It is
connected to the reservoir, which contains the storage of food for the
organism.
Starch can't be used by the organism the way it is, because cells aren't able to do anything with it.
If you break it into glucose though, it becomes usable.
Hope it helped,
BioTeacher101
Is this a book you working in on ?