Question

I can’t distinguish day ____________ night.

Short answer

The correct preposition to fill in the blank is 'from'. The completed sentence is: 'I can’t distinguish day from night.'

Step-by-step solution

Understand the context

In this sentence, the filler word that is required to complete the given sentence is missing, indicating confusion or inability to differentiate between two distinct time periods (day and night). Therefore, a word that implies a separation between 'day' and 'night' is needed.

Selection of appropriate preposition

The preposition 'from' is most suitable in this context as it is typically used to denote differentiation or distinction between two entities, places, or time periods.

Fill in the blank with 'from'

On putting 'from' in the blank, the sentence becomes: 'I can't distinguish day from night'. This sentence makes perfect sense, as the preposition 'from' allows the expression of difference or contrast between 'day' and 'night'.