Step 1: Set up the idea. Bacteria are named by their shape, so we match each shape with its scientific term. Step 2: Spherical bacteria (A). Round bacteria are called cocci (example Streptococcus), so A pairs with II. Step 3: Rod-shaped bacteria (B). Rod-shaped bacteria are bacilli (example Lactobacillus), so B pairs with IV. Step 4: Comma-shaped bacteria (C). Comma-shaped bacteria are vibrio (example Vibrio cholerae), so C pairs with I. Step 5: Spiral bacteria (D). Spiral bacteria are spirilla, so D pairs with III. Step 6: Assemble and conclude. The match A-II, B-IV, C-I, D-III is option 1. \[ \boxed{\text{A-II, B-IV, C-I, D-III}} \]
