What statement is true concerning sensitive vs. specific case definitions?

A. A specific case definition should be used at the beginning of an outbreak to identify all cases.
B. A sensitive case definition will include more cases than a specific case definition.
C. A sensitive case definition will not include limitations on person, place, and time but a specific case definition does.
D. Both sensitive and specific case definitions should include the exposure or risk factor you are interested in evaluating.

is this a psat question, if so do not cheat try your best.

i think the answer is 95 hope this

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.