To solve this problem, we need to identify the incorrect statement regarding immunity. Let's analyze each option:$\newline \bullet$Option 1: When ready-made antibodies are directly given, it is called Passive immunity.$\newline$ - This statement is correct. Passive immunity involves the transfer of ready-made antibodies to an individual.$\newline \bullet$Option 2: Active immunity is quick and gives full response.$\newline$ - This statement is incorrect. Active immunity is not quick; it takes time to develop as the body needs to produce antibodies in response to an antigen.$\newline \bullet$Option 3: Foetus receives some antibodies from mother, it is an example for passive immunity.$\newline$ - This statement is correct. The transfer of antibodies from mother to fetus is a form of passive immunity.$\newline \bullet$Option 4: When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called Active immunity.$\newline$ - This statement is correct. Active immunity involves the production of antibodies by the host's immune system in response to an antigen.$\newline$Therefore, the incorrect statement is Option 2: Active immunity is quick and gives full response.$\newline$This corresponds to the correct option, which is Option 2.