The correct option is D The spores possess true walls but can survive only for few months
The plasmodium is a sporozoan protist which passes its life cycle in two hosts, Anopheles female mosquito as a primary host and human as a secondary host. Its life cycle is complex as it involves two distinct sexual and asexual phase. The spores containing true walls are extremely resistant as it can survive for many years under unfavourable conditions.
So, the correct option is 'The spores possess true walls but can survive only for a few months'.