The Paston letters' historical significance derives primarily from A. what they reveal about the tumultuous relationships among family members. B. the fact that they are the largest surviving collection of 15th-century correspondence. C. what they imply in terms of the class struggles common during medieval times. D. the fact that they portray the anguish the family felt going through a time of social unrest.

B. the fact that they are the largest surviving collection of 15th-century correspondence.

Explanation:

Paston Letters, the largest surviving collection of 15th-century English correspondence. These letters are essential to historians and as well, philologists and is preserved mainly in the British Museum. Some of it was gotten from the circle of the career soldier Sir John Fastolf between 1378 and 1459, while some other parts of it, was derived from the records of the Paston family, Fastolf’s neighbours in eastern Norfolk.

These letters serves as ample evidence on matters relating to social, cultural, political, legal, religious and economic issues of Medieval England.

Also, they are important to the history of the English language as they are written in the language of the era which was quite different from Modern English.

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.