Punctuation with Transitional Phrases

Very Hard Usage And Mechanics Punctuation

Read the following sentence carefully:

Once the project was approved, the team began planning its execution however, unforeseen complications arose that delayed the timeline.

Which of the following options correctly punctuates this sentence?

Once the project was approved, the team began planning its execution; however unforeseen complications arose that delayed the timeline.

Once the project was approved, the team began planning its execution. However, unforeseen complications arose that delayed the timeline.

Once the project was approved, the team began planning its execution, however, unforeseen complications arose that delayed the timeline.

Once the project was approved the team began planning its execution; however, unforeseen complications arose that delayed the timeline.

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% Correct44%