Which of the sets shown includes the elements of set z that are both odd numbers and multiples of 7? z = {−21, −14, −7, 0, 7, 14, 21} a. {−21, 21} b. {−21, −7, 7, 21} c. {−14, 0, 14} d. {−21, −14, −7}

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.