Step 1: Recall the definition.
Section 378 of the Indian Penal Code, 1860 defines theft. In simple words, theft is dishonestly taking movable property out of someone's possession without their consent, and moving it.
Step 2: List the key ingredients.
The essentials are: a dishonest intention, the property must be movable, it must be taken out of a person's possession, taken without consent, and there must be some movement of the property to take it.
Step 3: Test each option.
We need the option that matches movement of movable property out of a person's possession without consent.
Step 4: Why force is wrong.
Using physical force or violence against a person is not theft. That extra force turns it into robbery or extortion, which are separate offences. So option (A) is wrong.
Step 5: Why immovable property and public place are wrong.
Theft can only be of movable property, so taking immovable property is not theft, ruling out option (B). And there is no rule that the property must be removed only from a public place, so option (D) is wrong too.
Step 6: Conclude.
The essential element of theft is the movement of movable property out of a person's possession without their consent.
\[ \boxed{\text{The movement of movable property out of a person's possession without their consent}} \]