Answer:
B
Explanation:
If a semicolon joins two sentences, then first, you need to look for where the semicolon is, second, separate the two parts and then determine which ones are sentences.
In A, gold and power is a phrase, not a sentence but and the 2nd part is a sentence so that is incorrect.
In C, the first part is a sentence but "to bow to the king" isn't a sentence, therefore, that's incorrect.
"The youth would be disposed of" and "the king would be pleased" are two sentences, therefore, the answer is B.
