Our plan is to do research on homelessness worldwide.

Choose the correct option.

This question is asking to replace the phrase 'do research' with a phrasal verb.

Possible phrasal verbs that fit the context:

• carry out research
• conduct research
• undertake research
• make a study of

Without the options to choose from, a definitive answer cannot be provided. However, 'carry out' or 'conduct' are the most common and appropriate phrasal verbs to use with 'research'.