Select the option that will improve the highlighted part of the given sentence. In case no improvement is needed, select 'No improvement required'.
"Placing a huge magnet atop the temple pose to being the biggest hurdle for the masons."

The correct replacement is (c) "posed to be."
Explanation:
· "Pose to being" is incorrect because "pose" should be in past tense ("posed") to match the sentence structure.
· The correct phrase "posed to be" means "presented as a challenge."
Other Options:
· (a) "Posing as be" – Incorrect, grammatically wrong.
· (b) "Poses for being" – Incorrect, unnatural phrase.
· (d) "No improvement required" – Incorrect, as "pose to being" is grammatically incorrect.
Corrected Sentence:
· "Placing a huge magnet atop the temple posed to be the biggest hurdle for the masons."
Example Sentence:
· "The broken bridge posed to be a major problem for travelers."