Topic: Linkers or Connectors,

Best Answer Explained in Below-:

The correct answer to the question is **B) No sooner hat**, although it appears to be a typographical error. The correct phrase should be "No sooner had." This phrase is used to indicate that something happened immediately after another event.

The structure "No sooner ... than ..." is commonly used to express that one action occurred right after another. In this case, the sentence implies that the moment she arrived at the exam hall, the door closed, emphasizing the immediacy and synchronicity of the two events.

For example, the sentence can be appropriately completed as follows: "No sooner had she reached the exam hall than the door closed." This construction highlights that her arrival coincided precisely with the door closing, reinforcing a sense of urgency and timing.

Option **A) As sooner as** and **C) As soon as** do not fit the required grammatical structure needed for the sentence. Similarly, **D) No sooner** is also incomplete, as it lacks the necessary verb phrase to convey the intended meaning. Thus, "No sooner had" appropriately captures the immediate sequence of events.