Fill in the blank with the most appropriate word.

We must ______ help to the homeless and physically disabled people.

render

The most appropriate word to fill in the blank is render.

The word render means to give or provide something to someone. In this sentence, the speaker is saying that we must give or provide help to the homeless and physically disabled people.

The other options are not as appropriate.

• The word donate means to give money or goods to a charity or other organization. It does not make sense to say that we must donate help to the homeless and physically disabled people.
• The word exert means to use effort or energy to do something. It does not make sense to say that we must exert help to the homeless and physically disabled people.
• The word contribute means to give something to a common fund or purpose. It does not make sense to say that we must contribute help to the homeless and physically disabled people.