The correct answer is B. 15324.
The first word is “I”. This is the subject of the sentence. The second word is “help”. This is the verb of the sentence. The third word is “not”. This is a negative word. The fourth word is “you”. This is the object of the sentence. The fifth word is “did”. This is the past tense of the verb “to do”.
The sentence can be read as “I did not help you”. This means that the speaker did not help the listener.
The other options are incorrect because they do not make sense. For example, option A, 24351, could be read as “24 did not help 51”. This does not make sense because 24 is not a person and 51 is not a verb.
Option B, 15324, is the only option that makes sense. It can be read as “I did not help you”. This means that the speaker did not help the listener.