The correct answer is - ক) at Full Sentence is - The ministers arrived at a decision last night.
• Arrive at something - English Meaning: to reach an agreement about something. - Bangla Meaning: (সিদ্ধান্ত, মূল্য, বয়স ইত্যাদিতে) উপনীত হওয়া বা পৌঁছানো।
- Example sentence: We arrived at a conclusion after long discussion.
Source: 1. Accessible Dictionary by Bangla Academy. 2. Cambridge Dictionary.