Відповідь:
D
Пояснення:
prove (кому? - професору) - to
necessity (необхідність чого? - експерименту) - of
Complete the sentence with perpositions
The young scientist was trying to prove ... the proffessor the necessity...the experiment.
a) on, in
b) at, by
c) under, by
d) to, of
The young scientist was trying to prove to the proffessor the necessity of the experiment.
