True or False, according to the Megafauna Extinction Timeline, megafauna and humans arrived 50 thousand years ago?

False

Explanation:

Megafauna are large animals that roamed the Earth during the Pleistocene Epoch, 1.6 million - 10,000 years ago.

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.