A sentence is provided in the question below with a part highlighted in bold. There may be an error in the highlighted part. The erroneous phrase can be replaced with one of the given alternatives. Choose "No improvement required" as the answer response if the sentence is correct.

Stormy weather caused the wind howl through the trees.

Correct option is B

Correct Answer: (b) wind to howl through
Explanation:
The original sentence is:
"Stormy weather caused the wind howl through the trees."
· The verb "caused" requires the following verb to be in the infinitive form ("to + base verb") to indicate what was caused.
· Therefore, "wind to howl through" is the correct form.
Why the other options are incorrect:
· (a) wind howling by: Incorrect because "howling by" does not fit the context or the grammatical structure after "caused."
· (c) wind for howling: Incorrect because "for howling" is not the correct form after "caused."
· (d) wind to howl before: Incorrect because "before" changes the meaning and does not fit the sentence.
· (e) No improvement required: Incorrect because the original sentence is grammatically incorrect.
Thus, (b) wind to howl through is the correct replacement.