Which of the following can make you ill if you come in contact with an infected person?

Given below are a few situations:
$(i)$ Geeta of Class $IX$ was having a common cold. She sits with Sarika,who also develops the disease.
$(ii)$ Animesh of Class $IX$ shifted to a new residence with his family where a water purification system has not been installed yet. He develops Cholera and Dysentery.

Name any three diseases transmitted through vectors.

Which of the following is not an infectious disease?

$AIDS$ cannot be transmitted by:

Label the modes of disease transmission from $(a)$ to $(f)$ in the provided diagram.