After reading the given TEXT answer the 4 questions by choosing the appropriate option. TEXT Researchers in Kenya have found that a fish could be an effective weapon in the fight to reduce the spread of malaria. A fish that is normally eaten was introduced to several places in the west of the country. The fish eats mosquito larvae, which are young mosquitoes before they have wings. People have known for a long time that this fish eats mosquito larvae, but this was the first time that researchers had looked at how the fish could be used to control malaria. This disease made 300 million people ill and caused a million deaths worldwide every year.
Question: 1
What was the effective weapon used to reduce the spread of malaria in Kenya?