Final answer:
The word that best fits the overall meaning and tone of the sentence is 'obscure'. Suzie searched tirelessly for a dozen silent films, indicating that she was looking for films that were not well-known or easily found.
Step-by-step explanation:
The word that best fits the overall meaning and tone of the sentence is obscure. This is because Suzie searched tirelessly for a dozen silent films, indicating that she was looking for films that were not well-known or easily found. The word 'perplexing' does not accurately describe Suzie's search for silent films.
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