Select the option in which the words share the same relationship as that shared by the given pair of words.
Barometer : Pressure
A barometer is an instrument used to measure pressure. Similarly, an ammeter is an instrument used to measure current.
Thus, the correct answer is Option A.

Statement: All flowers are beautiful. Some beautiful things are fragile.
Conclusion I: Some flowers are fragile.
Conclusion II: All beautiful things are flowers.
For the reaction \( A + B \to C \), the rate law is found to be \( \text{rate} = k[A]^2[B] \). If the concentration of \( A \) is doubled and \( B \) is halved, by what factor does the rate change?