The correct answer is: C. since
The word “since” is used to indicate the beginning of a period of time. In this case, the speaker is saying that the person has been playing since tea break. This means that the person started playing at some point during tea break and has continued playing ever since.
The other options are incorrect because they do not indicate the beginning of a period of time. The word “until” is used to indicate the end of a period of time. The word “from” is used to indicate the starting point of a period
of time and the ending point of a different period of time. The word “for” is used to indicate a period of time that has already passed.Here are some examples of how the other options could be used in a sentence:
- He played until tea break.
- He played from tea break to dinner.
- He played for two hours during tea break.