Due to the more rigid nature of their covalent bonds, nonmetals show low and high brittleness.

The right answer is ductility.

A non-metal is a chemical element whose single-body atoms are joined by covalent bonds or intermolecular bonds, and not by metal bonds.

In their solid state, the nonmetals have dull or weakly shiny surfaces (although those of iodine have metallic reflections), are rather fragile and brittle (with the notable exception of diamond carbon), and are devoid of the elasticity, malleability and ductility characteristic of metals.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

so what is the problem with your lab report and whats the subject of the lab report? i will you