Select the phrase/ connector from the given three alternatives, which can be used to form a single coherent sentence from the sentences given below, implying the same meaning.
My sister got a bad grade in Physics. She cannot concentrate at all.
I. Not being able to concentrate
II. Getting a bad grade in Physics
III. My sister not concentrating
The sentences suggest that the first sentence is a result of the second sentence.
So, the joined sentence must begin with the second sentence. 'Because she couldn't concentrate', she got a bad grade.'
This meaning is only shown by the phrase 'not being able to concentrate', given by I.
So, a contextually coherent joined sentence is given by Only I.
Therefore, the correct answer is option 3.