English Grammar – Spot the error (identify the erroneous segment or choose ‘‘No error’’). Sentence: He deserted the path of honour in order to satisfy his ambition and then went down his doom very quickly.

Introduction / Context:This sentence checks idiomatic preposition choice with the fixed expression “go to one’s doom.” Idioms are conventional; altering prepositions causes ungrammatical or non-idiomatic phrasing.

Given Data / Assumptions:

• The intended meaning is that he ultimately met his destruction/fate (“doom”).
• The phrase given is “went down his doom,” which feels unidiomatic.

Concept / Approach:Correct idiom: “go to one’s doom” or “meet one’s doom.” The preposition “to” is required after “go” when indicating movement toward a state/outcome. “Down” is not used in this idiom.

Step-by-Step Solution:

Verification / Alternative check:Replace with a clearly idiomatic version and read for fluency. “Went to his doom” reads naturally and matches standard English usage.

Why Other Options Are Wrong:

• “He deserted the path of honour” – idiomatic phrase; correct.
• “in order to” – standard infinitive of purpose; correct.
• “satisfy his ambition” – correct collocation.
• “No error.” – incorrect since D is erroneous.

Common Pitfalls:Substituting prepositions in fixed expressions; assuming any directional preposition (“down”) will work after “go.”

Final Answer:and then went down his doom very quickly.