Some researchers contend that sleep plays no role in the consolidation

All correct except Q3 in 7 mins, including 2 mins 45 seconds to read.
Para 1- Some researcher's view- sleep plays no role in the consolidation of declarative memory, but concede that cognitive capacities of these individuals have never been systematically examined
Para 2- More claims of these researchers- improvements of memory overnight can be explained by the mere passage of time, Author's opinion

1. The primary purpose of the passage is to
C argue against a particular position regarding sleep’s role in memory- Correct, Author disagrees with the position of some researchers

But when sleep is compared with wakefulness, and performance is better after sleep, then some benefit of sleep for memory must be acknowledged.

2. According to the author of the passage, which of the following generalizations about memory and sleep is true?

A There are some memory-consolidation processes that have nothing to do with sleep.- Correct
Certainly there are memory-consolidation processes that occur across periods of wakefulness, some of which neither depend on nor are enhanced by sleep.

3. Which of the following best describes the function of the sentence in Highlighted lines?

A It provides the reasoning behind a claim about the role of sleep in memory consolidation.
B It explains why a previous claim about sleep and memory is unsustainable.
C It demonstrates why wakefulness is central to the process of declarative memory consolidation.
D It emphasizes the limited role sleep plays in the process of declarative memory consolidation.
E It concedes that the consolidation of declarative memory does not depend entirely on one factor.

I chose option B over option E.

These researchers also claim that improvements of memory overnight can be explained by the mere passage of time, rather than attributed to sleep.--> Sleep is not a factor in the improvement of memory overnight as per these researchers

But recent studies of memory performance after sleep — including one demonstrating that sleep stabilizes declarative memories from future interference caused by mental activity during wakefulness — make this claim unsustainable.--> recent studies question the claim in the previous statement

Certainly, there are memory-consolidation processes that occur across periods of wakefulness, some of which neither depends on nor are enhanced by sleep.--> Some memory-consolidation processes DO NOT depend on sleep or aren't enhanced by it.
In the last line, the author acknowledges some benefit of sleep


4. The importance of the study Highlighted is that it
B identifies a specific function that sleep plays in the memory consolidation process

Certainly there are memory-consolidation processes that occur across periods of wakefulness, some of which neither depend on nor are enhanced by sleep. But when sleep is compared with wakefulness, and performance is better after sleep, then some benefit of sleep for memory must be acknowledged.