Concept:This question tests correct verb form usage after the infinitive marker "to".
Explanation:The sentence contains an error in part (b), "to prayed".
After the preposition "to", the base form of the verb (infinitive) must be used, not the past tense.
"Prayed" is the past tense of "pray". It cannot follow "to".
The correct infinitive form is "to pray".
Thus, the corrected phrase is "from faraway places to pray".
The rest of the sentence is grammatically correct.
Part (a) "Many people came" is fine. Part (c) has no issue.
Therefore, the error lies only in part (b).
Answer:(b)