For the first line start at -1 and from there go up to and to the right three
for the second line on nuber one start at 4 and down 1 and to the left 1
Answer:b
Step-by-step explanation:l
All of them are strategies for preventing cancer
An example of the ratio 4:1 could be, in a school for every 4 girls there is 1 boy. Or something similar:)
1st element can be matched with 5
2nd element can be matched with 4
3rd element can be matched with 3
etc.
Total number of correspondences = 5*4*3*2*1 = 120
