Final answer:
Focusing exclusively on necessary factors is advisable in English and other subjects as it enhances the effectiveness and clarity of the work.
Step-by-step explanation:
Focusing exclusively on factors that are necessary for the occurrence of a desired outcome is a common strategy in various fields, including English. For example, when writing an essay, it is important to focus only on relevant information that supports the thesis statement and argument.
By excluding irrelevant details, the essay becomes more focused and coherent, making it more likely to achieve its intended purpose of persuading or informing the reader. This approach of selectively considering necessary factors is applicable in many academic and professional contexts, including history, biology, and business.
Therefore, in English and other subjects, it is advisable to concentrate on the essential factors that contribute to the desired outcome, as it improves the effectiveness and clarity of the work.