Answer:
No they cannot
Step-by-step explanation:
Leukemia, also called blood cancer is a cancer that affects blood forming tissues including the bone marrow affecting the body's ability to ward off infections.
The researchers cannot conclude that proximity to high tension wires is the cause of leukemia because of confounding (other external unaccounted) variables.
There are other external factors which could be the cause of higher rate of leukemia in the area with close proximity to high tension wires, and unless the two environments were kept under similar conditions with proximity to high tension wires the only difference, then it would be wrong to conclude such as the other variables unaccounted for at play were not observed and could also have an effect.