Could you help me to answer these question as soon as possible?

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Thank you so much

DQuestion 6 1 pts Which one of the following library functions is NOT used to specifically manage dynamic variables? realloc(void ptr, size_tn) O memsetivoid ptr, int value, size_t num) Ofree(void ptr) malloc(size t n) estion 7 1 pts Which of the following repetitive instructions execute at least once, regardless of the condition being true or false? O while O do/while O foreach O for