Correct option is B
Option (b) contains an error.
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Explanation: The phrase "while the time comes" is incorrect. The correct phrase should be "when the time comes." The word "when" is used to refer to a specific point in time in the future, which is the intended meaning here, rather than "while," which implies a continuous action during a period of time.
Grammatical Rule Used: Use "when" to refer to a specific moment in time, especially when referring to future events. "While" is used to indicate actions happening simultaneously over a period of time.
Example: Incorrect: I will call you while I arrive. Correct: I will call you when I arrive.