I believe that's incorrect <span>parallelism</span>.
Also, there should be a "you" between who and are.
Answer:
OC.
Explanation:
ar·chae·ol·o·gist
/ˌärkēˈäləjəst/
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noun
a person who studies human history and prehistory through the excavation of sites and the analysis of artifacts and other physical remains.
1:b revising 2:c proof reading 3:a checking for spelling errors 4:<span> D. a step by article about pet grooming written for pet lovers digest. 5: d editing/proofreading</span>