When writing a thesis, you need to know what you're going to discuss in your written piece. This sentence is important because it lets the reader know what they will be spending their precious time reading. A thesis is important because it helps you stay on topic, because you can always refer back to it while you're writing.
I recommend you do some general research about Malaria, and then begin writing your one to two sentence thesis. Remember, a good thesis should be opinionated and arguable, and can be supported by facts.
Here's a quick example:
"Stray animals in urban neighbors cause nothing but trouble. They affect the safety of residents, public and personal property, and endanger wildlife."
By reading this thesis you would know I soon would be discussing how stray animals safety of residents, public and personal property, and endanger wildlife. Which would ideally have one body paragraph that supports my claim with multiple facts. Now, when I am writing a I can look at my first paragraph for reference to keep my written piece organized.
C. the infected cows were slaughtered and made into feed for other animals to eat
Explanation:
It is thought that BSE was spread via meat-and-bone meal fed to cattle. The practice of using this material as a source of protein in cattle feed has been common for several decades.