"Professional education and vocational training are the foundation for the overall development of a nation". Justify this statement with
suitable examples.
?

Professional education and vocational training are the foundation for the overall development of a nation because, by training people in the different careers and jobs that they will develop throughout their lives, this in turn is generating a series of people specialized in different labor fields that will benefit from one or the other it shapes society as a whole. Therefore, through this specific education in labor matters, future progress and well-being are generated for citizens.

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.