Minimally, a formal, objective syntax would have the form:
Subject- verb- object.
The option that follows this pattern is option b:
<span>B. An earthquake of unprecedented scale struck the island nation of Haiti.
B is the correct answer.
The other options have unusual syntax, for example </span>phrases composed of only one word such as "Terrible"
<span>the Muslim place of worship, traditionally a structure that includes a prayer hall and an enclosed courtyard, with towers called minarets at the corners</span>