Why ________ playing football tomorrow?Seleccione una:a. he is notb. he isn´tc. isn´t he

To accurately fill in the blank in the sentence "Why ________ playing football tomorrow?", we need to analyze the options provided:

1. Option a: he is not - This phrase does not fit well in the context of the question since "why" typically requires an interrogative structure that makes sense.

2. Option b: he isn't - This could work as a contraction of "he is not," but it is still not in the correct form to complete the question.

3. Option c: isn't he - This option forms a tag question, which is commonly used in English to confirm information or seek clarification after a statement.

Conclusion

The most appropriate option to complete the sentence is option c: isn't he. Therefore, the complete sentence reads, "Why isn't he playing football tomorrow?" This structure is typical for seeking reasons behind an action.