7which must be true of any scientific hypothesis? *
1 point
a must be testable
b must undergo peer review
c must be approved by professionals
d must be proven correct by research
i think it is a but i am not sure

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.