Final answer:
The question is asking for an adjective to describe how the unexpected event affected plans. A suitable word could be 'upended', so the complete sentence would be: 'Our carefully laid plans were completely upended by a sudden and totally unexpected turn of events.'
Step-by-step explanation:
The sentence given is a fill-in-the-blank type and is looking for an adjective that can accurately describe the impact of the unexpected turn of events on the carefully laid plans. A suitable word could be 'upended' which means to disrupt or overturn. Therefore, the completed sentence would be: 'Our carefully laid plans were completely upended by a sudden and totally unexpected turn of events.' Other options could include words such as 'derailed', 'disrupted', or 'shattered'.
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