Select the most appropriate meaning of the highlighted idiom in the given sentence.
The lecture by the French professor seemed Latin and Greek to the young students.

Correct option is D

The most appropriate meaning of the highlighted idiom "Latin and Greek" in the given sentence is (d) Incomprehensible.
The idiom "Latin and Greek" is used to refer to something that is difficult to understand or incomprehensible.
Therefore, the sentence means that the lecture by the French professor was incomprehensible to the young students.