Select the statements that are correct for conditioned reflex.
(1) Acquired by practice or learning
(2) Does not abolish by lack of practice
(3) Participation of cerebral cortex.
(4) Originates spontaneously.

Options

A. 1,2,3
B. 1 & 3
C. Only 1
D. 2 & 4

Answer

To solve the question regarding conditioned reflex, we will analyze each statement one by one.

### Step 1: Understand the Concept of Conditioned Reflex
Conditioned reflexes are learned responses to specific stimuli. They are not innate but acquired through experience and practice.

### Step 2: Evaluate Each Statement
1. **Acquired by practice or learning**:
- This statement is **correct**. Conditioned reflexes are indeed learned behaviors that develop through practice and experience.

2. **Does not abolish by lack of practice**:
- This statement is **incorrect**. Conditioned reflexes can diminish or be abolished if the practice or reinforcement is not continued over time.

3. **Participation of cerebral cortex**:
- This statement is **correct**. Conditioned reflexes involve higher brain functions, including the cerebral cortex, which is responsible for processing and learning.

4. **Originates spontaneously**:
- This statement is **incorrect**. Conditioned reflexes do not occur spontaneously; they are learned responses that develop through conditioning.

### Step 3: Conclusion
Based on the evaluation:
- The correct statements regarding conditioned reflex are **(1) Acquired by practice or learning** and **(3) Participation of cerebral cortex**.

### Final Answer
The correct statements for conditioned reflex are **1 and 3**.

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