What is the wavelength in metres of a radio wave having frequency of 92.1MHz​

Explanation:

f⋅λ=c

f is frequency

λ is wavelength

c is speed of EM radiation in vacuum

(92.1×10⁶Hz)⋅λ=3.00×10⁸m/s

λ=3.26m

scholarship is an sc because, by definition, a subject complement is the adjective, noun or pronoun that follows a linking verb, for example the verb be (in any of its forms).

your answer is c) experiments with water vapor showed that elements combine in specific proportions.