The protozoan $Plasmodium$ undergoes sexual reproduction in which of the following?

The infectious stage of $Plasmodium$ in humans is...........

The following are the stages of the life cycle of $Plasmodium$. Arrange the stages in the proper order.
$A$. The parasites reproduce asexually in $RBCs$,bursting the cells.
$B$. The parasites reproduce asexually in liver cells,bursting the cells and releasing into blood.
$C$. Gametocytes develop in $RBCs$.
$D$. Sporozoites reach the liver through the blood.
$E$. Female mosquito injects sporozoites into humans during a bite.
Choose the correct answer from the options given below:

Which of the following pairs is correctly matched?

The malarial parasite is

Which of the following diseases are transmitted by mosquitoes?
$(i)$ Malaria $(ii)$ Pneumonia $(iii)$ Filariasis $(iv)$ Hepatitis