Question

question 13 of 20 :
select the best answer for the question

1. read the following paragraph and answer the question that follows.

\3d printers eliminate the need to manufacture a block of metal before the tooling process even begins. instead, the raw materials for 3d printers are easy-to-produce pellets, powders, pastes, or liquids. the printers can use lasers, uv lights, and other setting tools to finalize each layer. 3d printing may allow for tiny support structures to be added throughout. this makes the part strong where it needs to be strong and less so where the forces wont be as great. the new design may look like an intricate skeleton—just as strong but much lighter and using less material.\
what can you infer from this paragraph about 3d printing?

a. 3d printing isnt a practical manufacturing method for modern needs
b. 3d printers have significant advantages over traditional manufacturing methods
c. since 3d-printed items use less material, theyre weaker than items manufactured by other methods
d. workers must go through an extensive training process to correctly operate 3d printers

mark for review (will be highligh review page)
<< previous question

Explanation:

To solve this, we analyze each option:

• Option A: The paragraph highlights benefits of 3D printing (less material, lighter parts, strength where needed), so it is practical. Eliminate A.
• Option B: The paragraph states 3D printers eliminate the need for a metal block before tooling, use less material, make parts strong where needed and lighter. These are advantages over traditional methods (which likely require the metal block and more material). This matches the inference.
• Option C: The paragraph says "just as strong but much lighter and using less material", so 3D - printed items are not weaker. Eliminate C.
• Option D: The paragraph does not mention worker training. Eliminate D.

Answer:

B. 3D printers have significant advantages over traditional manufacturing methods.