Discuss some of the current trends in logistics and planning. What are the most important pieces of this part of the TDL puzzle? Your answer must be at least 150 words.

i guess the correct option is letter a.

use contrasting font sizes, but the same font style

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.