Which statement is a good hypothesis 1) crest is the best toothpaste. 2) Pantene shampoo works so good. 3) I love Oreos. 4) fabreeze neutralizes air odor for 12 hours

4) Fabreeze neutralizes air odor for 12 hours

Explanation: This hypothesis is sweet and short and to the point but also very concise in that it states that Fabreeze will neutralize air odor, and for the duration of 12 hours. This is a testable hypothesis with a testable variable, how long the odor is neutralized making this the best hypothesis in this list.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).