The correct answer is: b) directional selection
Directional selection is a type of natural selection in which an extreme phenotype is favored over other phenotypes. In this case, phenotype of large crickets will be favored, because they cannot be eaten by lizards. Large crickets are advantageous in surviving and reproduction. This will cause the allele frequency to shift over time in the direction of that large size phenotype.
White fur to keep them warm and camouflaged
Transgenic organisms are those that have had their genomes altered by external means. These organisms are found in applications of genetic engineering, but they are only useful if the inserted gene is expressed in the organism.
An example of a transgenic organism may be a rat with the gene for hemoglobin from a rabbit. This rat is only useful if it indeed does produce rabbit hemoglobin in its blood due to the inserted gene.
