Those who are averse with (A) taking risks (B) in business often find themselves (C) unsuccessful. No error (D).

• The incorrect part is- ক) Those who are averse with (A).

• Correct Sentence: Those who are averse to taking risks in business often find themselves unsuccessful.

- ভুল অংশটি হলো A (Those who are averse with).
- কারণ অনাগ্রহ/অনীহা বোঝাতে averse -এর সাথে appropriate preposition হিসেবে to/from বসে।
- তাই, বাক্যটিতে averse with-এর স্থলে averse to বসালে তা সঠিক হবে।

• Averse to
- English Meaning: Having a clear dislike of (something) : strongly opposed to (something).
- Bangla Meaning: বিমুখ; পরাঙ্মুখ; বিরোধী; অনীহ; অনিচ্ছু।

অন্যদিকে,
B) taking risks: সঠিক। averse to এর পরে Gerund phrase ব্যবহৃত হয়।
C) find themselves unsuccessful: সঠিক।

Source:
1. Accessible Dictionary by Bangla Academy.
2. Cambridge Dictionary.