Explanation:
<h3>ohh that sa great,,,,,,,,</h3>
Answer:
B. How important memory strategies can be
Explanation:
by describing these techniques as "a lifesaver" the author is saying they are very important.
A Cannot be true because the author is saying that being able to use these strategies is a valuable thing not something that is too heavily relied on.
C cannot be true because this statement has nothing to do with the frequency at which people use memory strategies.
D cannot be true because the author is expressing that memory strategies can be essential so the importance is not exaggerated.
B, indicates that tBritish code breakers were much better
The verb is used intransitively because it has no subject.