Antimicrobics effective against only gram-positive bacteria would be termed:

• A. broad-spectrum
• B. narrow-spectrum
• C. bactericidal
• D. fungicidal

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the definitions of the terms related to antimicrobial spectrum. 'Broad-spectrum' antimicrobics are effective against a wide range of bacteria, including both gram-positive and gram-negative types.
2. Step 2: Recognize that 'narrow-spectrum' antimicrobics target a limited group of bacteria, often only gram-positive or only gram-negative bacteria, rather than a broad range.
3. Step 3: Note that 'bactericidal' refers to antimicrobics that kill bacteria, regardless of their spectrum of activity, and 'fungicidal' refers to agents that kill fungi.
4. Step 4: Since the question specifies antimicrobics effective only against gram-positive bacteria, this fits the definition of 'narrow-spectrum' because the activity is limited to a specific group.
5. Step 5: Therefore, the correct term for antimicrobics effective only against gram-positive bacteria is 'narrow-spectrum'.