Answer:
B. They contain substance necessary for the well-being of pigs
Step-by-step explanation:
Hello! In the book, Squealer is a smart character, he rises to power due to his quick mind, his agile tongue, and the fact that he doesn't have any kind of morals. He justifies the fact that pigs have taken milk and apples for them because he says they contain substances necessary for the health of the pig and its brains.