The correct option is D another
Option D: 'Another' means 'one more', or 'in addition to'. The word applies to the given sentence, which means that 'Linda' wants one more glass of milk. Hence option D is correct.
Option A: 'Other' also means the same thing: 'in addition to'. But, the difference is in their usage.
'Other' is used for plural and uncountable nouns, whereas 'another' is used when the noun is singular "glass of milk".
Hence A is incorrect.
Option B: 'Some' is used for uncountable nouns, but the one here 'glass' is singular and countable.
Option C: 'Any' is used for negative sentences. The given sentence is positive.
Hence options B and C are incorrect.