Vector for ‘kala azar' disease is

Drugs, shocks and psychotherapy are the treatments of

Ergot, which is an important source of a drug is obtained from

$A$ : Live attenuated vaccine is better in terms of immunity provided to the recipient.
$R$ : As secondary lymphoid organs, example peyer's patches are stimulated to protect the individual.

Assertion : Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol.

Reason : A drunken person usually feels tense and less talkative.