Add spaces: Itpreventsthecomputercallingupanearlierversionoftheinfectedfile

Answer: It prevents the computer calling up an earlier version of the infected file

Add spaces: Alaybetwillbelabeledwitha"LAY"marker.

Answer: A lay bet will be labeled with a "LAY" marker.

Add spaces: Amarketisdefinedasstockswithinthesamegeographicalarea,thesamesectororofsimilargrouping,suchasforexamplecountries,indices,rawmaterialsorcurrencies.

Answer:
A market is defined as stocks within the same geographical area, the same sector or of similar grouping, such as for example countries, indices, raw materials or currencies.