What is the haploid chromosome number $(n)$ of Plasmodium?

Malignant malaria is caused by

Assertion $A$: $Plasmodium$ is a microscopic protozoan.
Reason $R$: Humans and female $Anopheles$ mosquitoes are the hosts of $Plasmodium$.
Which option is correct for Assertion $A$ and Reason $R$?

Which of the following is an intracellular parasite of humans?

In which stage of the $Plasmodium$ life cycle in the human body does asexual reproduction occur in the $cryptoschizont$?

For the development of metacryptozoites,the parasite: