Final answer:
The reasonable gain in fluency from reading a passage multiple times over a week is around 10-20% improvement in WCPM.
This correct answer is d.
Step-by-step explanation:
The amount of gain in fluency (measured by WCPM) that is reasonable to expect from a student who reads a passage several times over a week can vary.
However, a commonly observed range is a 10-20% improvement in words correct per minute (WCPM). This means that a student's reading speed can increase by around 10-20% after reading the same passage multiple times over a week.
For example, if a student reads a passage at a rate of 100 words per minute the first time, they may improve to about 110-120 words per minute by the end of the week.
This correct answer is d.