Which of the following is a health effect of a diet high in saturated fats? A. Increased life span
B. Decreased risk of stroke
C. Increased blood flow
D. Increased risk of heart attack
E. Decreased risk of atherosclerosis

I think that fats lead to hardening of the arteries and thus affect the heart ... this is in my opinion

So I think it's C

a and b

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.