Select the alternative that will improve the highlighted part of the sentence in case there is no improvement select “No improvement”.
I had to go to Delhi, however, I changed my mind and decided not to go.

Correct option is D

The highlighted part of the sentence "I had to go to Delhi, however, I changed my mind and decided not to go." requires "No improvement."
· The original sentence correctly uses "however" to introduce a contrast between the initial intention to travel and the subsequent decision not to. The conjunction effectively links two independent clauses within the sentence.
· Example: I planned to buy a new laptop, however, I decided to save the money for something else.
· Other options:
· (a) "therefore I change my mind" incorrectly suggests a causative relationship where there is none.
· (b) "nevertheless I change my mind" and (c) "however I will change my mind" both misuse tenses and conjunctions, disrupting the logical flow of the sentence.