That the atom is indivisible was proposed by .

Options

A. Ruterford
B. Dalton
C. Bohr
D. Einstein

Answer

To solve the question "That the atom is indivisible was proposed by," we can follow these steps:

### Step 1: Understand the Concept of Atoms
- Atoms are the basic building blocks of matter. They are the smallest units of an element that retain the properties of that element.

### Step 2: Identify the Historical Context
- The idea of the indivisibility of atoms was a significant concept in the development of atomic theory.

### Step 3: Recognize Key Contributors
- John Dalton is a key figure in atomic theory. He proposed that atoms are indivisible and that all matter is made up of these small particles.

### Step 4: State Dalton's Theory
- According to Dalton's atomic theory, all matter is composed of elements, and these elements are made up of atoms, which are indivisible.

### Step 5: Conclude with the Answer
- Therefore, the statement that "the atom is indivisible" was proposed by John Dalton.

### Final Answer:
The atom is indivisible was proposed by John Dalton.

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