Correct Answer & Explanation
Option A
• 'Hamper' means to hinder, obstruct, or impede the movement, progress, or action of someone or something.
• Synonyms: Impede, hinder, obstruct, retard.
• 'Assist', 'Facilitate', and 'Promote' mean helping or furthering progress.
• Therefore, option A ('Impede') is the correct answer.