Which line from Hometown Summer describes the setting? O KELSEY: Leave her alone, Robbie. Just because you're unhappy, you don't have to take it out on her.
O TASHA: (Tasha runs from one side of yard to another) Daddy, look how big this yard is. It's big enough for a dog. It's
big enough for TWO dogs!
O VALERIE: (Continuing.) Hello, you must be Natasha ... You're not very big, are you?... What's the matter, young
lady, the cat got your tongue?
ORJ: I mean when he was younger. He took my brother Russ and me fishing and hunting and taught us so much
about the farm. He was the best.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.