My mother had _______ the fire wood before it began to rain.
Answer Details
The correct option is "split" because it is the past participle form of the verb "split" which means to divide or break something into smaller parts. In this sentence, the action of splitting the firewood was completed before it began to rain. "Splited" and "splitted" are incorrect forms of the verb, and "splitting" is the present participle form which doesn't fit in the context of the sentence.