Read the excerpt from the riddle of the rosetta stone. the ptolemys kept their greek culture, including their language, but they also respected the customs and religious beliefs of the native egyptians. so it was only natural for the priests’ statement to have been carved in both greek and egyptian on the rosetta stone. what signal word readers identify evidence of a cause-and-effect relationship in this excerpt? but also so and

The answer is C:  So.   The adverb so helps readers identify evidence of cause-and-effect because it was used to introduce a conclusion or logical result:  "it was only natural for the priests' statement to have been carved..." from some prior affirmation: "...kept their culture...respect the customs and religious beliefs of the native Egyptians.". A more formal word with the same meaning is therefore.  

the answer is C: so

Explanation:

that a few simple words can whet the mind's appetite to further explore.

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