The Golden Gate Bridge,
which is built on the North American strait connecting the San Francisco Bay to the Pacific Ocean and called one of the man-made Wonders of the World,
remained the largest suspension bridge in the world for almost four decades.The portion in bold is the main clause of the sentence and the balance portion consists of two modifiers modifying the GGB.
therefore, the two modifiers must be parallel to each other. We already have called .. in the non UL portion so we need a Verb-ed modifier in the beginning of the UL portion.
In option D we have the ideal modifier's - built.... parallel to called ..... D is correct.
a. which is built on the North American strait connecting the San Francisco Bay to the Pacific Ocean and
Relative clause is not parallel to Verb-ed noun phrase.
b. built on the North American strait connecting the San Francisco Bay to the Pacific Ocean and which is
same issue as in A.
c. built on the North American strait that connects the San Francisco Bay to the Pacific Ocean is
the GGB(main subject), built(verb 1)... , remained(verb2) ... - run on sentence.
d. built on the North American strait connecting the San Francisco Bay to the Pacific Ocean and
Correct
e. built on the North American strait that connects the San Francisco Bay to the Pacific Ocean and is
same issue as C