Statement-1 : Yeast is a multicellular fungus.
Statement-2 : Penicillium is an unicellular fungus.
Statement-3 : Albugo is a parasitic fungus on mustard.
(a) Only statement-1 and statement-2 are correct
(b) All the above statements are incorrect
(c) Only statement-3 is correct
(d) Both statement-1 and statement-3 are incorrect

Options

A. Only statement-1 and statement-2 are correct
B. All the above statements are incorrect
C. Only statement-3 is correct
D. Both statement-1 and statement-3 are incorrect

Answer

To solve the question, we need to evaluate each statement about fungi and determine their correctness.

### Step-by-Step Solution:

1. **Evaluate Statement 1**: "Yeast is a multicellular fungus."
- Yeast is actually a unicellular fungus, not multicellular. It is a type of fungus that exists as single cells. Therefore, **Statement 1 is incorrect**.

2. **Evaluate Statement 2**: "Penicillium is a unicellular fungus."
- Penicillium is a multicellular fungus, commonly known for producing the antibiotic penicillin. It consists of a network of filaments (hyphae). Thus, **Statement 2 is also incorrect**.

3. **Evaluate Statement 3**: "Albugo is a parasitic fungus on mustard."
- Albugo is indeed a parasitic fungus that infects mustard plants, causing diseases such as white rust. Therefore, **Statement 3 is correct**.

### Conclusion:
- Since Statement 1 and Statement 2 are incorrect, and Statement 3 is correct, the correct answer is **(c) Only statement-3 is correct**.