A bacterium is capable of with standing extreme heat, dryness and toxic chemicals. This indicates that it is probably above to form
a)	A thick peptidoglycan wall	b)	Endospores
c)	Endotoxins	d)	Endogenous buds

(b)

Endospores are highly resistant, physiologically dormant, single called structures formed usually inside a bacterium mother cell. The mature endospore is highly dehydrated, shows no metabolic activity and is resistant to heat, radiations or attack by enzymatic or chemical agents. Under favorable environmental conditions, the endospore germinates and vegetative cell comes out and grows.