Look at the table displaying data collected in a health class after a test is taken.

Scores Based on Average Time Studying

Time spent studying (hours)
Score on test (%)
0
45
0.25
48
0.5
56
0.75
62
1
70
1.5
80
2
83
2.5
76
3
90
3.25
96
4
98

What would most likely help improve the lowest test scores?
practice analyzing diagrams
effective time management
use of mnemonic devices
help reading scientific content