Which two scientific tools are the researchers in this selection developing to help solve crimes? A identifying people by proteins found in a single hair B collecting information in communities about the risk of B certain crimes C identifying common germs in homes that can make people sick D using microbes to determine exactly when someone died E identifying voices by analyzing recordings of speech sound waves

## Step 1<br />The problem is asking us to identify two scientific tools that researchers are developing to help solve crimes. The options provided are:<br />A. Identifying people by proteins found in a single hair<br />B. Collecting information in communities about the risk of certain crimes<br />C. Identifying common germs in homes that can make people sick<br />D. Using microbes to determine exactly when someone died<br />E. Identifying voices by analyzing recordings of speech sound waves<br /><br />## Step 2<br />We need to select the options that are directly related to solving crimes. <br /><br />## Step 3<br />Option A, "Identifying people by proteins found in a single hair", is a scientific tool that can be used to identify individuals based on their unique protein composition in hair. This can be used in forensic investigations to link a suspect to a crime scene.<br /><br />## Step 4<br />Option E, "Identifying voices by analyzing recordings of speech sound waves", is another scientific tool that can be used to identify individuals based on their unique voice patterns. This can be used in forensic investigations to link a suspect to a crime scene.<br /><br />## Step 5<br />Options B, C, and D, while they may be useful in certain contexts, do not directly contribute to solving crimes. Option B, "Collecting information in communities about the risk of certain crimes", is more related to crime prevention than solving crimes. Option C, "Identifying common germs in homes that can make people sick", is more related to public health than crime solving. Option D, "Using microbes to determine exactly when someone died", is more related to forensic pathology than crime solving.