29. Upon reviewing the essay and finding that some information has been left out, the writer composes the following sentence incorporating that information:

This technique, also known as "open excavation," became the standard for subway tunneling for nearly sixty years.

If the writer were to add this sentence to the essay, the sentence would most logically be placed at Point:

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Add the sentence "This technology, commonly known as 'open excavation', has been the standard in subway tunnels for nearly sixty years". The previous sentence at C mentioned that "an innovative engineering method" refers to this technique in this sentence, so this sentence should be placed at C.