insert a semicolon in between the independent clauses
is your answer
Well you answered the question yourself, but yes, B is the correct answer here.
<em>"</em><em>the </em><em>missile's </em><em>trajectory</em><em> </em><em>was</em><em> </em><em>preset.</em><em>"</em>
<em>;</em><em>-</em><em>/</em>
shark is to fish as crocodile is to reptile
hope that helps