The correct sentences expressing the conditional mood are:
- "If we had left earlier, we would have arrived on time." (Correct)
- "If Evan had called, we would make plans for later." (Incorrect - it should be "we would have made plans for later.")
- "If the rain had stopped, you could have gone to the park." (Correct)
- "If the flowers are blooming, they would have smelled sweet." (Incorrect - it should be "they smell sweet.")
Based on this assessment:
- Sentence 1: A) Correct
- Sentence 2: B) Incorrect
- Sentence 3: A) Correct
- Sentence 4: B) Incorrect