Topic: Fill in the Blank,

Best Answer Explained in Below-:

The correct answer to complete the sentence is "B) witnesses." The phrase "Four independent witnesses" effectively conveys that multiple individuals observed the same event, specifically the crime, providing key evidence to support the assertion being made.

Let's analyze the options:

A) "person" is singular and does not fit with "four independent," as it implies only one individual rather than multiple.

C) "spectator" typically refers to someone watching an event, such as a sports game, rather than a crime scene. The term lacks the authoritative implication of having observed something relevant to legal matters.

D) "attestant" is not commonly used in everyday language and does not convey the same clarity and recognition as "witness."

In legal contexts, "witnesses" are individuals who can provide testimony regarding a particular incident, making this option the most appropriate for conveying the contextual meaning and ensuring grammatical accuracy. Thus, "four independent witnesses" clearly communicates that these individuals have firsthand knowledge, making them credible sources in relation to the crime scene.