"3D printing" has applications in which of the following?<br/>1. Preparation of confectionery items<br/>2. Manufacture of bionic ears<br/>3. Automotive industry<br/>4. Reconstructive surgeries<br/>5. Data processing technologies<br/><br/>Select the correct answer using the code given below:

1. Preparation of confectionery items — Correct. 3D food printing is used to make chocolates, candies and customized edible designs.

2. Manufacture of bionic ears — Correct. 3D printing has been used in biomedical engineering to create ear structures/bionic ear prototypes.

3. Automotive industry — Correct. It is widely used for rapid prototyping, tooling and even production of some vehicle components.

4. Reconstructive surgeries — Correct. 3D printing helps in patient-specific implants, prosthetics and surgical planning for reconstruction.

5. Data processing technologies — Correct. 3D printing is also applied in electronics/computing research, including fabrication of components used in data-processing devices and related technologies.

Hence, all five are valid applications.