Which of the following describes active voice?

1. voice of writing using the present tense
2. Voice used in writing in which the subject of the sentence receives the action
3. Voice of writing using the past tense
4. Voice used in writing in which the subject of a sentence does the action

4. Voice used in writing in which the subject of a sentence does the action

The correct description of active voice is:

4. Voice used in writing in which the subject of a sentence does the action.

To determine which of the options describes active voice, we need to understand what active voice means.

Active voice is a grammatical term that refers to the construction of a sentence where the subject performs the action described by the verb. In other words, the subject of the sentence is the "doer" of the action. It is the opposite of passive voice, where the subject of the sentence is acted upon by the verb.

Now let's analyze the given options:
1. "Voice of writing using the present tense": This option refers to the use of present tense, but it does not specifically mention the subject performing the action. Therefore, it does not describe active voice.
2. "Voice used in writing in which the subject of the sentence receives the action": This option correctly describes passive voice, where the subject receives the action. It does not describe active voice.
3. "Voice of writing using the past tense": This option mentions the use of past tense, but it does not specify anything about the subject performing the action. Therefore, it does not describe active voice.
4. "Voice used in writing in which the subject of a sentence does the action": This option accurately describes active voice, where the subject of the sentence is the doer of the action. This is the correct answer.

So, the correct option is 4. "Voice used in writing in which the subject of a sentence does the action"