Though he tried heart and soul, he could not cross the boundary. ( compound)

• ক He can not cross the boundary but he tried heart and soul.
• খ He tried heart and soul but could not cross the boundary. ✅ সঠিক উত্তর
• গ He can not cross the boundary and he tried heart and soul.
• ঘ He tried heart and soul and could not cross the boundary.