Which of the following is included in block letter format?

Block letter format is a standardized method of structuring a business letter where all elements are aligned to the left margin without indentation. The key components of a block letter include the date, inside address, salutation, body of the letter, complimentary close, and the signature block. Specifically, the correct choice highlights the essential parts of a letter that adhere to the block format standard.

In block format, the date starts at the left margin, followed by the inside address, then the salutation, and the body follows as well. The complementary close also aligns with the left margin, ensuring consistency and clarity in presentation. The inclusion of these elements in the choice signifies an understanding of proper letter formatting, which is crucial for professional communication.

Other options, while possibly relevant in different contexts, do not specifically define block letter format itself. Font size and margins may vary based on guidelines or will vary depending on individual preferences or organizational standards, but they are not definitive characteristics of block letter format. Bold headings and footers could be part of any document’s presentation style, but they are not unique attributes of block letter formatting. Thus, highlighting the key elements that make up a block letter format is why the second choice stands out as the correct answer.