Select the option that is related to the third word in the same way as the second word is related to the first word.

Ohmmeter : Resistance : : Zymometer : ?

Fermentation

Ohmmeter : Resistance : : Zymometer : ?

The logic followed here is :

Ohmmeter : Resistance ⇒ Ohmmeter is helpful in measuring electrical resistance

Zymometer : ? ⇒ Zymometer is an instrument which is used to determine fermentation of yeast by measuring of the amount of carbon dioxide provided from a given quantity  of sugar