Option C is the correct answer because ‘track’ means ‘a prepared course’. The sentence describes about being careful about the project. ‘On the right path’ means to ensure that the project is completed/delivered properly, so option C ‘track’ is the most appropriate word to complete the meaning of the sentence.
Option A is incorrect because ‘route’ means ‘a way to get somewhere’. It is not
the appropriate grammatical word for the given sentence.
Option B is incorrect because ‘road’ means ‘a wide track for vehicles to go’. It
is not the appropriate grammatical word for the given sentence.
Option D is incorrect because ‘way’ means ‘method, manner or a road’. Although ‘way’
is relatively similar in meaning, it is not the appropriate contextually.