In the above options, sperms are the haploid cells. In humans, haploid cells are those have only half the number of usual number of chromosomes. Sperm, gamates and egg cells are the haploid cells examples.

Metonymy is a figure of speech in which a thing or concept is referred to by the name of something closely associated with that thing or concept. Hence it occurs when a word is replaced by a word that has an obvious relation to itself.

In the given example of the text, the bones refer to the human being.

Globalization has the largest effect on the economies. Globalisation is the process of interaction and integration between people, companies, and governments worldwide.

A trade bloc is a type of intergovernmental agreement for a group of countries where barriers to trade are reduced or eliminated among the participating states and less competition and for economic integration.

Wind and solar energy are examples of Renewable energies. 

Renewable energy sources are those which can be naturally replenished. 

A needle has an eye through which we keep a thread and use for stitching clothes.

An ionic bond is formed in between the two atoms with the transfer of electrons from an atom to the other to become stable after pairing.

The atom which has low ionization energy will give some of its electrons to get stable electronic configuration .