The correct answer is B. “The stars shine bright at night.”
The verb “shine” is used to describe the emission of light. In this case, the stars are emitting light, so the correct verb to use is “shine.”
The other options are incorrect because they do not accurately describe the action of the stars. Option A, “shines,” is the third person singular form of the verb “shine.” However, the stars are not a single entity, so they cannot be said to “shine” in the same way that a person can. Option C, “has shine,” is the present perfect tense of the verb “shine.” However, the sentence is not about the stars having shined in the past, but about them shining in the present. Option D, “shining,” is the present participle of the verb “shine.” However, the sentence is not about the stars being in the act of shining, but about them shining as a general fact.
Therefore, the correct answer is B. “The stars shine bright at night.”