Which of the following are correct ways of providing evidence to support the thesis of a research paper?

I take it that I can choose multiple options here:)

Let's look at all the options:

Use direct quotations from experts on the topic.

-yes! this is a good idea. Experts are reliable and quoting them will support your thesis.

Link relevant portions of your paper to blog sites on the same topic.

-no, I don't think so: unless the blog sites are by experts, they don't have to be reliable.

Discuss the topic with your classmates and include their opinions.

-in general, no, since your classmates are not experts on the topic. Except when they are: if, for example your research paper researches social interaction between them

.Obtain more information on the topic from published sources

-yes, a very good idea!

Include paraphrased text from authoritative sources.

-yes, a very good idea! These sources could be for example experts in the field!

the answer is c: at the city park,it has two basketball courts, a playground, and a walking path.