4. What is the technique in which you place your objects higher or lower in the picture?
A. changing the color value
B. overlapping
C. placement of objects

placement of objects

Explanation:No offense but it literally gives you the answer in the question so you could have easily figured it out

he played a solid-body guitar

explanation:

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.