Large networks of ators covalently bonded together are called: a) Giant covalent structures
b) Molecular structures
c) Giant ionic lattices
d) Superconductors

Giant Covalent Structures, Diamond and Graphite are giant covalent structures since they're allotropes of Carbon.

Giant covalent structures contain very many atoms. , each joined to adjacent atoms by covalent bonds. The atoms are usually arranged into giant regular lattices - extremely strong structures because of the many bonds involved.

i think it's c. i'm not sure but i think so.