Correct Answer & Explanation
Option B
• The phrase 'two days ago' indicates a specific point in the past.
• When a specific past time is mentioned, the Simple Past Tense (V2) is used.
• 'Bought' is the simple past form of 'buy'.
• Options A (Present Perfect), C (Past Perfect), and D (Present Continuous) are incorrect because they are not used with definite past time expressions like 'ago'.