Which of the following is the characteristic that all organisms have in common?
A. All organisms are made up of cells.
B. All organisms are multicellular.
C. All organisms can make their own food.
D. All organisms have cells with a nucleus.

All organisms are made up of cells

Explanation: (B) is not correct because there are prokaryotes which are unicellular organisms. (C) is not correct because us, humans, can not make our own food. Only plants can do that - hence they are called autotrophs. (D) is not correct because a major difference between prokaryotes and eukaryotes are that prokaryotes do not have a nucleus - whereas eukaryotes do.

for the points

the missing space is phylum