Complete the sentence with the correct usage of the phrasal verb:
Somebody has to _________ the baby.
Phrasal verbs are combinations of verbs with an adjective or a preposition that function similar to an idiom, have a specific meaning to them and can be used in sentences. The meaning of the phrasal verbs given in the options are:
Option A) Look it : look like something especially when you are pretending to be some character
Option B) Look up: search for some information
Option C) Look on: to observe or watch something without participation
Option D) Look after: to take care of someone or something
The sentence talks about 'somebody has to' and 'the baby'. The most obvious phrasal verb that completes the sentence meaningfully is option D) look after which means somebody needs to take care of the baby.
The other options are incorrect as they do not complete the sentence meaningfully.