Select the most appropriate option to fill in the blank in the given sentence.

Timers at traffic signals, that help motorists save fuel by switching off their engines while waiting, will soon be phased out due to technical ______.

glitches

The most appropriate option to fill in the blank is glitches.

• Symbols are signs or markings that represent something else.
• Illuminations are the act of making something bright or clear.
• Glitches are sudden, unexpected errors in a system or program.
• Streamers are long, narrow pieces of fabric or paper that are often used as decorations.