Using the gang recruitment strategy, , physical and/or psychological pressure is used on potential members and these potential members are told that either they or their family will be attacked if they fail to join.

coercive type

Explanation:

Gang recruitment strategy is the type of a recruitment strategy so

correct answer is coercive type as by this type of recruitment strategy shows.

and when members need to improve and that goes well with the current recruitment process

Potential members have to challenges to overcome by the one on one interviews  method.  

the correct answer is 2.

a slump in geology means a mass movement process of slope failure. a mass of rock or unconsolidated material drops along a slip surface. in other words, rock layers move a short distance down the slope. the slump block is an intact block (2), without any landslide material.

in this image, 1 is the surface of rapture (scarp), 2 the slump block, 3 main scarp (crown), 4 base of rapture with debris flow.

slumps are caused by clear cutting on unstable soils and the sagging of earth, in coastal areas they are due to wave infiltration.