The writer is considering deleting the first part of the preceding sentence, so that the sentence would

Question:

The writer is considering deleting the first part of the preceding sentence, so that the sentence would read:
Early spring is generally the first opportunity to observe the Wood Thrush in the United States.
If the writer were to make this change, the essay would primarily lose:

F. NO CHANGE
G. Difficult; as
H. Difficult as,
J. Difficult. As

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