Which of the following contains co-ordinate covalent bond?

The compound that contains a co-ordinate covalent bond is NH₄. A co-ordinate covalent bond, also known as a dative bond, is a type of chemical bond where both electrons in the bond originate from the same atom. In NH₄, the nitrogen atom donates a pair of electrons to a hydrogen ion, creating an NH₄⁺ ion with a co-ordinate covalent bond. HCI is a polar covalent molecule with a shared pair of electrons. CH₄ is a covalent compound where the carbon atom shares electrons with the hydrogen atoms. Na⁺CI is an ionic compound consisting of a positively charged sodium ion and a negatively charged chloride ion, which are held together by ionic bonds.