(Correct Answer receives brainliest)

                  Option-A ( Fe²⁺ ₍aq₎ + 2 e⁻   →   Fe ₍s₎ ) is the correct answer.

Explanation:

                    In inorganic chemistry oxidation and reduction reactions are defined as;

                  Oxidation Reaction:

                                                   Those reactions (mainly half reactions) in which the atom loses electrons are called as oxidation reactions. In given example the Magnesium is oxidized as it loses two electrons to for Mg²⁺ i.e.

                                   Mg ₍s₎   →   Mg²⁺ ₍aq₎  +  2 e⁻

                  Reduction Reaction:

                                                   Those reactions (mainly half reactions) in which the atom gains electrons are called as reduction reactions. In given example the Iron Ion (Fe²⁺) is reduced as it gains two electrons to form Fe i.e.

                                   Fe²⁺ ₍aq₎ + 2 e⁻   →   Fe ₍s₎

h let me think

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.