A product tree shows the parts that go into making a product

A product tree shows:

the parts that go into making a product

the subassemblies used in making the product

the sequence in which parts go together

all of the above

	A.	the parts that go into making a product
	B.	the subassemblies used in making the product
	C.	the sequence in which parts go together
	D.	all of the above

option D is correct

a product tree shows all the above 3 related to a particular product.

so, option D is correct