Evan found a website that has information he would like to use in his research paper. could a website be considered a credible source? a. yes b. no c. maybe

"C", "Maybe".
The credibility depends on the websites contents and credentials.
A website like a government's page is considered, "credible", because it is from a trusted source; the government. Whereas getting a random answer from Yahoo is considered less credible because of it not stemming from a trustable source.
Hey, it's TeenSuicide.

A.yes

although sometimes you will come across non reliable websites, not all are bad.

Ithink it would be. b

Walked would be the participle here. as it is a verb ending in -ed.