Answer:
Petra's job title is a researcher
Explanation:
<h2>Who is a researcher ?</h2>
A researcher is someone who takes on a particular project, that involves systematic and organized investigation either to improve on something, make a new finding,or a novel invention or results.
Back to our question Petra can also be called a scientist, analyst, investigator, experimenter, analyzer, tester, and she can work in the research and development (R&D) of a food related industry
Cyrus the Great became the undisputed Persian ruler in 554 B.C.
Explanation:
Cyrus the Great is one of the greatest rulers of Persia and is responsible for the formation of the borders of the historical Iranian region and also was responsible for the foundation of the first Persian empire.
He was an incredibly forward thinking ruler who made a codified law in his domains and unified the country under his rule and conquered new territory where he followed a liberal rule.
The people in his dominion were free to practice their religion and propagate it and only had to follow the codified rules that were universal.
Europe's arbitrary post-colonial borders left Africans bunched into countries.
Dorothea was able to live a relatively normal life, despite her Jewish heritage, is because:
She had Aryan documents from her father.
The answer above is the right choice among the three remaining. The other three choices does not suite the statement or rather does not fit the question so we chose the one above.