A subject complement is also known as a predicate noun or nominative.
Why are you asking about this
Answer:
1) #4, to convince my audience that my idea is true or better than other ideas.
2) #2, a source your audience can trust
3) #2, positive product reviews, & #5 website popularity
4) #1, a U.S. immigration website with .gov at the end & #2, a website displaying copies of newspaper articles about immigration from 1987
Explanation:
I'm a bit unsure about 3 but here are my opinions using logical thinking/basic english facts! Hope this helps :)
Temperature has a direct effect on whether a substance exists as a solid, liquid or gas. Generally, increasing the temperature turns solids into liquids and liquids into gases; reducing it turns gases into liquids and liquids into solids.