Error spotting (formal English; idioms with footwear): Identify the erroneous segment (A/B/C) — choose D if there is no error — 'Whenever you go to a temple / you must put off / your shoes at the entrance. / No error.' Focus on the correct phrasal verb for removing shoes and produce the polished, SEO-friendly correction.

Given data

• (A) Whenever you go to a temple
• (B) you must put off
• (C) your shoes at the entrance.
• (D) No error.

Concept/Approach: Idiomatic phrasal verbs for removing clothing/footwear
In standard English, the idiom for removing shoes is take off, not 'put off' (which means to postpone or repel). Therefore, (B) is unidiomatic.

Step-by-step correction
Replace (B) 'put off' → 'take off'.Corrected sentence: 'Whenever you go to a temple, you must take off your shoes at the entrance.'

Verification/Alternative
Other natural forms: 'remove your shoes', 'leave your shoes at the entrance'.

Common pitfalls
Confusing 'put off' (postpone) with 'take off' (remove) and 'put on' (wear).

Final Answer
(B) 'you must put off' is erroneous → 'you must take off'.