Single linkage is a measure of calculating dissimilarity between clusters by

a. considering the distance between the cluster centroids.
b. considering only the two most similar observations in the two clusters.
c. computing the average dissimilarity between every pair of observations between the two clusters.
d. considering only the two most dissimilar observations in the two clusters

Single linkage is a measure of calculating dissimilarity between clusters by

b. considering only the two most similar observations in the two clusters.

Explanation:

Single Linkage:

It is a type of hierarchical clustering  which is used to measure the dissimilarity between clusters by considering the only two observations that are closest in the clusters.

the answer is: c.that person might be arrested and deported

filling w-4 form incorrectly usually would rise suspicions from government's auditors. when they notice such mistakes, they would send their teams to investigate the situation further.

if those investigation teams believe that the incorrectness is done on purpose (with malicious intent), that person can be arrested or deported

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.