Explain how photography becomes one of the most powerful means of communication​

all of them except "c"

cad, or computer-aided design and drafting (cadd), is a software for design and technical documentation, which is an automated process as opposed to the manual drawing of plans. this gives a person an advance in making plans as an architect in a short period of time. one who can render plans through this software will gain a skill that is better than one who makes plans manually. this is a skill some companies look for in an employee.

there is not really a certain expensive film type but i believe all of them cost mostly the same price, i hope this a little bit