The correct answer is Option (1) → Retarded

The opposite of accelerated is retarded.

• Accelerated means to increase the speed or rate of something.
• Retarded means to slow down or delay something.

The other options are not opposites of accelerated.

• Reviewed means to examine or consider something carefully.
• Recorded means to write down or preserve something in a permanent form.
• Restored means to bring something back to its original condition.