Answer:
I will answer Part A first, then Part B.
Part A:
Using context clues, the correct meaning of the French phrase "faux pas" in the given sentence is "social mistake".
Explanation:
The sentence mentions that the diplomat studied local customs to avoid making a "faux pas" at a ceremony. The context suggests that the diplomat wanted to avoid an embarrassing or socially unacceptable action. Among the given options, "social mistake" best fits this context.
The other options do not make sense in the given context:
"dishonest statement" does not fit because the sentence does not imply any dishonesty.
"public ceremony" is mentioned in the sentence, but it is not the meaning of "faux pas".
"a fool of herself" is close in meaning but is not the most accurate translation of "faux pas".
Therefore, "social mistake" is the correct meaning of "faux pas" in this sentence.
Part B:
There is no Part B provided in the question. Please let me know if you have any further questions or if there is a Part B that you would like me to address.