anthonys research question is \what environmental policies have been adopted to protect southern blue whales…

anthonys research question is \what environmental policies have been adopted to protect southern blue whales near the coast of antarctica?\ he is having trouble finding sources that answer this exact question. how should he revise his research question?\n\na. he should make his research question more complex.\nb. he should narrow his research question to focus his topic.\nc. he should make his research question more concise.\nd. he should broaden his research question.
Answer
Brief Explanations:
Since he can't find sources for his specific question, broadening it will likely yield more results. Making it more complex or narrowing it will make it harder to find sources, and making it more concise doesn't address the source - finding issue.
Answer:
D. He should broaden his research question