Answer :
You were right it is a-direct object
It seems like you know the material but are doubting yourself
The correct answer is: A. direct object. Because: For a sentence like this, you need to re-arrange it to: "I saw a sprout in the pot soon after I planted the seeds". I is the subject, saw is the predicate, and sprout is the direct object.
Hope I helped!
- Amber
Hope I helped!
- Amber