The correct answer is: A. come/are watching
The sentence is about a general statement about people in general. It is not about a specific person or group of people. Therefore, we need to use the simple present tense. The simple present tense is used to talk about things that happen regularly or repeatedly. In this case, people regularly come home from work and watch TV in the evening.
The other options are incorrect because they use the present perfect tense. The present perfect tense is used to talk about things that have happened or been true up to the present moment. In this case, the sentence is not about things that have happened or been true up to the present moment. It is about things that happen regularly or repeatedly.
Here is a more detailed explanation of each option:
Option A: come/are watching
This is the correct answer because it uses the simple present tense. The simple present tense is used to talk about things that happen regularly or repeatedly. In this case, people regularly come home from work and watch TV in the evening.Option B: have come/are watching
This is incorrect because it uses the present perfect tense. The present perfect tense is used to talk about things that have happened or been true up to the present moment. In this case, the sentence is not about things that have happened or been true up to the present moment. It is about things that happen regularly or repeatedly.Option C: come/watch
This is incorrect because it does not use the verb “to be”. The verb “to be” is required in the simple present tense when the subject is a plural noun. In this case, the subject is “people”, which is a plural noun.Option D: has come/are watching
This is incorrect because it uses the present perfect tense and the verb “to be”. The present perfect tense is used to talk about things that have happened or been true up to the present moment. In this case, the sentence is not about things that have happened or been true up to the present moment. It is about things that happen regularly or repeatedly.