Select the correct option:
Her argument was compelling; ________, it was based on outdated data.

Correct option is C

The correct option to fill in the blank is (c) nevertheless.
Explanation: “Nevertheless” means in spite of that / however, and it is used to show contrast between two ideas. Here, the argument is compelling but it is based on outdated data—so a contrast connector is needed, and “nevertheless” fits perfectly. (Hindi meaning: फिर भी/इसके बावजूद)
Example: The plan seems risky; nevertheless, we must try.
Explain why other options are incorrect:
· (a) otherwise: means if not / in a different way; it doesn’t naturally show the contrast intended here.
· (b) conversely: means on the other hand / in the opposite way; it is used for direct opposites, not this kind of concession.
· (d) subsequently: means after that/later; it indicates time sequence, not contrast.