He left for Delhi ................. train.
Ain
Bby
Con
Dfrom
Answer:
B. by
Read Explanation:
By is used to show the means of transport (by bus, by car, by train, by air).
We do not use an article after by in this case.
Why the others are wrong:
❌ in – would need an article (in the train)
❌ on – used with public transport only with articles (on the train)
❌ from – shows source, not means
📌 Rule to remember:
by + transport (no article)