How can one ensure clear and concise communication?Using lengthy sentencesEliminating unnecessary wordsOmitting key detailsIncluding complex terminology

To ensure clear and concise communication, one should:

1. Eliminate unnecessary words: This means getting rid of any fluff or filler words that don't add value to your message. Stick to the point and use only the words necessary to convey your message.

2. Avoid using lengthy sentences: Long, complex sentences can be confusing and hard to follow. Try to keep your sentences short and simple. This makes your message easier to understand.

3. Do not omit key details: While it's important to be concise, you also need to make sure you're providing all the necessary information. Don't leave out important details that could help the other person understand your message.

4. Avoid complex terminology: Unless you're sure the other person will understand, avoid using jargon or complex terms. Use simple, everyday language whenever possible.

Remember, the goal of communication is to be understood, not to sound smart or sophisticated.