Which of the following are linear defects? . an edge dislocation. a frenkel defect. a screw dislocation. a schottky defect

"An edge dislocation" and "A screw dislocation" are the ones among the following choices given in the question that are linear defects. The correct options among all the options that are given in the question are the first and the third options. I hope that this is the answer that has come to your help.