Which statement is the best example of a hypothesis? 1. There is no relationship between fatigue and reaction time. 2. Sugar consumption is not related to level of activity. 3. Smaller class size is related to better academic performance. 4. Self-esteem does not affect persistence on a difficult task.

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis