Final answer:
A phrase with tentative language includes terms like "it seems that" or "I may be wrong" which introduce uncertainty. This is known as a fallacy of weak induction and can be used to soften statements but risks undermining arguments if overused or unsupported by sufficient evidence.
Step-by-step explanation:
The phrase that uses vague, tentative, or weak terminology is one that includes language such as "it seems that," "it appears to me that," "I may be wrong, but," "possible," "likely," "plausible," and "risk." These phrases and words introduce a level of uncertainty to the statement, which can weaken the conclusion being presented. This is commonly known as a fallacy of weak induction, where the evidence or reasons presented are too weak to firmly establish a conclusion.
When communication aims to be non-confrontational or when there is a need to express a credible concern without asserting strong authority, these types of phrases may be purposefully used. However, it is also important to ensure that the main ideas are supported by sufficient evidence and not merely generalities, as this can undermine the effectiveness of the argument.