Despite the fact that HIV is not easily transmitted, its deadly potential requires that law enforcement officers protect themselves from becoming infected by it. At the Callen Precinct, officers use only disposable items for collecting evidence whenever blood is present. While investigating a particular crime scene where blood was present, Detective R.C. of the Callen Precinct used only disposable items for collecting evidence.
Explanation
Answer: D - The second sentence of the paragraph states that whenever blood is present, all officers at the Callen precinct use only disposable items for collecting evidence. This is equivalent in meaning to answer D, that no officers use non-disposable items when collecting evidence in the presence of blood. Response E contradicts the second sentence in the paragraph by stating that some officers do not use disposable items exclusively when blood is present. Responses A, B, and C refer to the evidence gathering procedures of Detective R.C., who is identified in the third sentence of the paragraph as working for the Callen Precinct. Response A contradicts the sense of the second sentence by stating that Detective R.C. does not always use disposable items when blood is present. Responses B and C refer to R.C.?s evidence gathering when blood is not present. However, the paragraph does not give us information about evidence gathering in that case.
