Define the concept of development

Explanation:

Concept development is a set of activities that are carried out early in the systems engineering life cycle to collect and prioritize operational needs and challenges,

Or,

Concept development is a process of developing ideas to solve specified design problems.

work yay..other than that pretty good actually it hot though (≧▽≦)

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.