English

The word 'withdraw' means to take back or remove. Its antonym is 'advance,' which means to move forward or proceed, making option C the correct choice.

The phrase 'to run across' means 'to meet casually' or 'to come upon someone or something unexpectedly.' This matches option B exactly.

A 'prodigy' is a child with unusual or remarkable talent, especially in a particular field. The other options do not fit this definition.

The idiom "call it a day" means to stop working on something, usually because enough work has been done or it is time to rest. Therefore, option A correctly defines the phrase.

The word 'Parliamentarian' is the correct spelling. The other options contain incorrect letter arrangements that do not conform to standard English spelling.

Option D, 'who knew,' correctly uses the relative pronoun 'who' to refer to 'students' and the past tense verb 'knew' to match the past context. The other options are grammatically incorrect or do not fit the sentence structure.

The phrase 'The whole nation was behind the President' correctly uses the preposition 'behind' to indicate support. The other options do not fit the context appropriately.

The word "Pronunciation" is the correct spelling. The other options contain common misspellings with extra or misplaced letters.

The adjective 'heated' is commonly followed by the prepositions 'about' or 'over' when referring to a dispute or topic, as in 'heated argument about your father' or 'heated debate over the policy.' The preposition 'about' is idiomatic and correct in this context. Other options like 'down,' 'on,' or 'from' are not used with 'heated' in this sense. Therefore, 'heated about your father' is the correct phrase.

The correct spelling of the word is 'Knowledge'. The other options contain common misspellings or letter transpositions.