Which type of stress causes rocks to fold?

a. compression
b. shearing
c. strike-slip
d. tension

A. compression

Compression stress causes rocks to fold.

Explanation:

Compression stress refers to a type of stress that squeezes rock together which causes deformation. It means a type of stress that is directed toward the middle or center of a rock mass. It causes stress to fold because of the large magnitudes of lithostatic stress in tectonic plates. It is very common at convergent boundaries.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'