If you are talking about the first of the ten commandments in Exodus, then they would be:
1. You shall have no other gods before me
2. You shall have no idols
3. You shall not take the Lord's name in vain
4. You shall remember the Sabbath and keep it holy
5. Honor your father and mother
These are in my own words, but the reference is Exodus 20:3-12 if you would like to quote them word for word. I highly recommend reading them all!
A company making profit from genetically modified potatoes would probably only say good things about genetically modified profits, so they'd likely be biased.
A book written by a freelance author whose previous books were about other scientific issues would likely have the book about genetic modification in general, rather than the historical development of it, so his book wouldn't be the best source to use.
A book written by a woman who believes she got sick from genetically modified products would probably be biased against genetically modified products, so her book wouldn't be the best source.
A book written by a scientist who helped develop the technology to genetically modify vegetables would probably know a lot about the historical development, considering he helped develop it. This is the best source to use in my opinion.
Answer:
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The answer you are looking for is credo