The correct answer is: D. is shining
The verb “shine” means to emit light. In the sentence “Now the sun is shining,” the verb “shine” is in the present tense. This is because the sentence describes a current event. The sun is shining right now, as you read this sentence.
The other options are incorrect because they are not in the present tense. Option A, “shine,” is in the infinitive form. Option B, “has been shining,” is in the present perfect tense. Option C, “has shone,” is in the past participle form.
The present perfect tense is used to describe an action that began in the past and continues into the present. The past participle form is used to form the present perfect tense.
In the sentence “Now the sun is shining,” the verb “shine” is in the present tense because it describes a current event. The sun is shining right now, as you read this sentence.