Answer:
On the message area i have posted a link that i think can help you!
Explanation:
The answer should be "slow" the first pairing both end in "-est" making them superlatives giving a parallel in the structure. Following the same structure, the words from the pairing after can be ignored, the word dim is an adjective, "light" bulb is a noun, therefore, it is not a parallel structure.
Your most memorable day It’s about you just talk how you usually talk “I remember the most memorable day in my life.. it was a hot noon on a sunny day...”