Identify a one-dimensional nanostructure

The same question, asked 3 times: 2 May 2023 S2*, 11 May 2023 S2*, 16 May 2023 S1. Every wording below, oldest first.

Try each one first, then open its answer.

Question 1
2 May 2023 S2
79 $Which from following nanomaterials has two dimensions less than 100 nm?$
Tap an option to check your answer.
Question 2
11 May 2023 S2
56 $Which among the following is an example of one-dimensional nanostructure?$
Tap an option to check your answer.
Question 3
16 May 2023 S1
71 $Identify one dimensional nanostructure from following.$
Tap an option to check your answer.