A type of granulocyte and agranulocyte
(i) are phagocytic cells that destroy foreign organisms entering the body.
(ii) secrete histamine, serotonin, heparin, etc., and are involved in inflammatory reactions.
(iii) resist infections and are also associated with allergic reactions.
(iv) are responsible for the immune responses of the body.

Options

A. `{:(i,ii,iii,iv),("Monocytes","Neutrophils","Basophils","Eosinophils"):}`
B. `{:(i,ii,iii,iv),

("Neutrophils","Basophils","Eosinophils" Monocytes"):}`
C. `{:(i,ii,iii,iv),("Neutrophils","Monocytes","Eosinophils","Basophils"):}`
D. `{:(i,ii,iii,iv),("Monocytes","Neutrophils","Eosinophils","Basophils"):}`

Answer

To solve the question regarding the types of granulocytes and agranulocytes, we will analyze each statement and identify the corresponding cells.

### Step-by-Step Solution:

1. **Identify Phagocytic Cells**:
- The first statement mentions phagocytic cells that destroy foreign organisms.
- Granulocytes involved in this function include **neutrophils**, which are known for their ability to engulf and digest pathogens.
- **Monocytes**, which are agranulocytes, also have phagocytic capabilities.
- Therefore, both neutrophils (granulocyte) and monocytes (agranulocyte) fit this description.

2. **Identify Cells that Secrete Histamine, Serotonin, Heparin**:
- The second statement refers to cells that secrete substances involved in inflammatory reactions.
- **Basophils**, a type of granulocyte, secrete histamine and heparin, which are crucial in the inflammatory response.
- Thus, basophils are the cells that match this description.

3. **Identify Cells that Resist Infections and are Associated with Allergic Reactions**:
- The third statement discusses cells that resist infections and are linked to allergic reactions.
- **Eosinophils**, another type of granulocyte, are primarily involved in combating parasitic infections and are also associated with allergic responses.
- Therefore, eosinophils are the relevant cells for this statement.

4. **Identify Cells Responsible for Immune Responses**:
- The fourth statement indicates cells responsible for the immune responses of the body.
- Both **neutrophils** and **monocytes** are key players in the immune response, as they help in identifying and eliminating pathogens.
- Hence, this statement can refer to either neutrophils (granulocyte) or monocytes (agranulocyte).

5. **Summarize Findings**:
- From the analysis:
- **Phagocytic cells**: Neutrophils (granulocyte) and Monocytes (agranulocyte)
- **Secrete histamine, serotonin, heparin**: Basophils (granulocyte)
- **Resist infections and allergic reactions**: Eosinophils (granulocyte)
- **Immune responses**: Neutrophils (granulocyte) and Monocytes (agranulocyte)

6. **Determine the Correct Answer**:
- Based on the analysis, we can conclude that:
- The first statement can refer to neutrophils and monocytes.
- The second statement is specifically about basophils.
- The third statement is specifically about eosinophils.
- The fourth statement can refer to neutrophils and monocytes.
- Therefore, the correct answer is **Option B**, which includes neutrophils, basophils, and eosinophils.