Answer:
A: Designing the layout.
Step-by-step explanation:
Remember this: Geometry uses shapes.
Let's use the process of elimination.
D is eliminated because it does not use shapes.
C is eliminated because it uses numbers, not shapes.
B is eliminated because it uses science, not math or shapes.
A uses shapes in order to design a structure.
Answer:

<h3>6/7 is the right answer.</h3>
Answer:
A. Point C divides segment AB so that AC:CB is 1:3
or either c
Answer:
21
Step-by-step explanation:
put 21 were x is and then divide 21÷7=3