Which sentences apply the basic rules of capitalization correctly?

The correct answer includes sentences that appropriately apply the rules of capitalization in various contexts.

In the first sentence, the title "General" is capitalized because it refers to a specific person's rank or title before their name. This reflects the rule that specific titles or ranks should be capitalized when they precede a proper noun.

The second sentence correctly capitalizes "Tupperware," which is a brand name, as brand names require capitalization. The common nouns "lunch" and "box" are not capitalized, which is consistent with standard capitalization rules.

In the third sentence, capitalization is correctly applied to the start of the quoted question, showcasing that the first word in a quotation is capitalized when it’s a complete sentence.

Therefore, all sentences follow the established rules for capitalization, justifying the selection of the option that includes all of them.