The correct answer is: She’ll pay you as soon as she receives the parcel.
The word “receive” is a transitive verb, which means it requires a direct object. In this case, the direct object is “the parcel.” The sentence is in the simple future tense, which is formed with the auxiliary verb “will” and the base form of the verb. The word “as soon as” is a subordinating conjunction that indicates that the action of the main clause (She’ll pay you) will happen after the action of the subordinate clause (she receives the parcel).
The other options are incorrect because they do not make sense in the context of the sentence. Option B, “as soon as she,” is missing the direct object. Option C, “receive the parcel,” is missing the subject. Option D, “No error,” is incorrect because there is an error in the sentence.