Final answer:
The most accurate description of the trend in tone for today's memos is 'informal'. However, balancing informality with professionalism is essential for clear and respectful business communication.
Step-by-step explanation:
The term that best describes the trend in tone in today's memos is informal. The trend towards informality in business communication has been growing, as organizations aim to create a more approachable and personable atmosphere. While being informal, it is essential to maintain a level of professionalism by being polite and courteous, avoiding the pitfalls of being too familiar or casual in order to make a solid first impression.
In terms of tone, memos and other forms of business communication have become friendlier and more conversational, though it is crucial to balance this with respect and professionalism. The incorrect use of jokes or sarcasm can be misconstrued in written form, as tone is hard to convey, particularly in brief memos or emails. Therefore, maintaining an appropriate level of formality is recommended to ensure clear and effective communication.