If two organisms are in the same phylum, which other classification category must they also share? a. class b. order c. kingdom

The correct answer is option C, that is, kingdom.

Explanation:

Taxonomic ranking refers to the hierarchy system used for the classification of the organism. In this ranking, domains are differentiated into kingdoms, the kingdoms are differentiated into phylum. The phyla are differentiated into class, and the class is further differentiated into orders.  

The orders are differentiated into the genus, and the genus is ultimately differentiated into species. The phylum is classified as lower to the kingdom and higher to the class. Thus, the organism coming under the same phylum must exhibit a similar kingdom.  

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.