Replace the underlined parts with the option that represents the proper usage of grammar. Fortunately, the baby fallen back onto the soft carpet after trying to clamber up the stai

• ক the baby had fell back onto the soft carpet
• খ the baby fell back onto the soft carpet ✅ সঠিক উত্তর
• গ the baby falls back onto the soft carpet
• ঘ the baby fallen back onto the soft carpet