Daniel Katz proposed the theory of "functionalist theory of attitudes". He was the first to postulate that the attitude of an individual is derived from the functions he/she performs in a society in order to achieve their goals.
According to Mr. Katz, the attitude of a person changes with the change in the purpose of his/her function or with the change of the function itself. At this point , a person feels blocked or frustrated. Therefore, it is essential for all to know that the attitude of a person cannot be changed by information or by perception but by changing his/her underlying motivational and personality needs
As per the functional theory , the attitude of an individual depends on his/her needs or goals. In other words it can be said that attitude of a person depicts the hidden motives of their lives. Attitude is one of the basic need of an individual which shapes their life desires and expectation and also is an imperative part of the cognitive system. Thus, it can be said that attitude is something which is acquired as per the requirement of life. 'Hence option C is correct
The answer that best fits the blank provided above is C3a and C5a. Mast cells release this so called histamines once they are exposed to C3a and C5a which are fragments of complement proteins. These are also called as <span>Anaphylatoxins along with C4a. Hope this helps.</span>