7 The lights went ...... during the storm.

Step 1: Understand the context of lights during a storm. Lights typically stop working or turn off during a storm.
Step 2: Identify the correct phrasal verb. 'Went out' is the common phrasal verb meaning to stop functioning or to be extinguished.
Step 3: Select the appropriate option. Option A, 'out', correctly completes the phrase.
Answer: out