Final answer:
The subjunctive mood with the modal verb 'should' is used to suggest a recommended action, such as in the example, 'You should assume that all facts must be checked for accuracy before submission.'
Step-by-step explanation:
The verb mood, specifically the subjunctive mood, is used to express wishes, suggestions, or hypothetical scenarios. In the case you're asking about, with the modal verb should, you would use the subjunctive mood to suggest an action that is recommended or advisable. An example of using assume with should in a sentence could be, "You should assume that all facts must be checked for accuracy before submission." In this case, the use of 'should assume' implies that it is recommended to check facts before submission.
When adjusting for clarity and accuracy in writing, especially concerning verb moods and modal verbs, make sure that subjects and verbs agree, tenses are consistent, and verb phrases are used correctly as to maintain the writer's intent in a rhetorically effective way. For instance, using the modal verb 'should' with 'assume' follows traditional expectations in English language usage.