Answer:
Option 2: Gram-negative bacterium
Option 3: Spreads through sexual contact
Step-by-step explanation:
The correct answers are Option 1: Causes gonorrhea and Option 2: Gram-negative bacterium.
N. gonorrhoeae is a Gram-negative bacterium that causes gonorrhea, a sexually transmitted infection. It is spread through sexual contact, not through respiratory droplets. There is currently no vaccine available for N. gonorrhoeae.