Answer : Option:- A
One of the advantages of Selective Laser Sintering (SLS) is that it does not require external support structures for the parts being printed. This is because the powder bed itself supports the part during the printing process. The laser fuses layers of powder together, and the unused powder surrounding the part provides the necessary support. This reduces material waste and post-processing work, making SLS a versatile and efficient method for creating complex parts, especially for industries like aerospace and healthcare.