Answer: None – PSD/PSB support layers but not web. TIFF supports layers but is not web-friendly. For web without layers: PNG/JPEG.
c) Multiply
Answer: Drop Shadow (Layer Style) or the Lighting Effects filter. For a pseudo-3D extrusion, use Filter > Stylize > Extrude . photoshop exam questions and answers
Test yourself before your real exam:
Open portrait.jpg . Isolate the subject from a busy background, replace the background with a solid color, and save two versions: Answer: None – PSD/PSB support layers but not web