Answer:
a. Leaving the airport, Henri's Blackberry fell out of his pocket d. I saw the new dye cast machine walking past the workshop
Explanation:
In sentence (a), it seems as if Blackberry was leaving the airport, not Henri. In sentence (d), it seems that machine was walking, not the carrier. In both sentences, dangling modifier is used in such as way to modify a word which is not clearly stated.
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Explanation:
They feel they are about to be rewarded with a huge treasure.
E. It is a process in which steps can be repeated as needed.