María Was Asked to Draw an Isosceles Triangle (A Triangle

María was asked to draw an isosceles triangle (a triangle with two equal sides) as part of a homework assignment. She had a straight edge to draw straight lines but didn't have a ruler to measure the length of her sides. Thus, all she could do was eyeball the correct lengths. She decided to draw more than one triangle so that she could go to school a little early, get a ruler, measure all of her triangles, and select the "best" isosceles triangle to turn in to the teacher.
Suppose María drew the following triangles:
A) Which triangle should she select to turn in to the teacher? Why?
B) Suppose María drew 20 triangles like the ones shown above but of various sizes. Once she measures the lengths of the sides, how should she go about selecting which triangle is the "best" isosceles triangle?