He was unwilling to testify, he was afraid of the defendant.
Because he was afraid of the defendant, he was unwilling to testify.
He was unwilling to testify: he was afraid of the defendant.
Because he was afraid of the defendant he was unwilling to testify.
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The Correct Option isB
Solution and Explanation
Step 1: Logical cause and effect
The cause is “he was afraid of the defendant,” and the effect is “he was unwilling to testify.”
Step 2: Correct sentence structure
Option (b) clearly shows this cause-effect relationship with correct subordination using “Because.”
Step 3: Eliminating errors
- (a) is a comma splice (two independent clauses joined only by a comma).
- (c) is acceptable but less natural in formal English than (b).
- (d) lacks a comma after the dependent clause, which affects readability.