Step 1: Understanding the Concept:
This question tests the meaning of the phrasal verb 'break out'. Phrasal verbs are idioms where a verb combined with a preposition or adverb has a meaning different from the individual words.
Step 2: Detailed Explanation:
The phrasal verb 'break out' means to start suddenly. It is commonly used in contexts like the outbreak of a war, a fire, a disease, or a fight.
For example:
"A fire broke out in the kitchen." (A fire suddenly started)
"World War II broke out in 1939." (The war began suddenly)
Let's analyze the options:
stop: This is an antonym of the correct meaning.
destroy: This is not related to the meaning of 'break out'.
begin: This is a synonym for 'start suddenly', which is the correct meaning.
separate: This is the meaning for a different phrasal verb, 'break up'.
Step 3: Final Answer:
The most appropriate meaning for the phrase 'break out' among the given options is begin.