爱好英语并且精通生物的高手进来看一下~

爱好英语并且精通生物的高手进来看一下~
You are designing an artificial drug-delivery "cell" that can penetrate animal cells.Which of these protist structures should provide the most likely avenue for research along these lines?
A.mitosomes
B.pseudopods
C.excavated feeding grooves
D.nucleomorphs
E.apical complex