Two friends share a protein bar which weighs 7 ounces. Each friend eats the same amount of the protein bar. Between which two whole numbers does the number of ounces of the protein bar that each friend eats lie?

I’m really confused and need your assist me with this question i’ve never been taught

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?

Urgent? will give brainliest to the first correct answer what is the area of the figure?