In English, tentative language is used to soften statements, making them less absolute or definite. This kind of language often expresses uncertainty or a lack of sureness. Here is an analysis of the options provided:
A. tends to - This phrase suggests that something usually happens, but it's not always the case. It implies a general but not absolute tendency, making it a tentative expression.
B. occurs because - This phrase asserts a direct cause-and-effect relationship. It suggests certainty and is thus not tentative.
C. suggests that - This term implies a possibility, rather than a definitive assertion, indicating a level of uncertainty or hypothesis.
D. appears to - This phrase is used when something seems to be the case, but there is room for doubt. It's tentative because it implies appearance rather than fact.
The correct answer is B. occurs because , as it expresses a sense of certainty and is not considered tentative language like the other options.