Final answer:
To express certainty or add emphasis when expressing a stance, use strong evidence and confident language, coupled with assertive body language such as maintaining eye contact.
Step-by-step explanation:
When expressing stance, to express certainty or add emphasis, one should utilize a combination of strong evidence and confident language.
This approach helps to build credibility with readers or listeners and projects a clear, assertive position on the subject at hand. While it's important to maintain a respectful tone, being direct and assured in your statement can demonstrate a high level of certainty.
On the other hand, vague language, avoiding eye contact, or whispering typically undermine the speaker's message and make it seem like they are unsure or lack confidence in their stance.
Adding emphasis can also be achieved through the writer or speaker's body language and verbal cues. Direct eye contact, for example, is often associated with honesty and certainty.
Coupled with factual evidence provided in a neutral and unemotional manner, one can create an objective stance that resonates with the audience without coming across as domineering.