It says …/It is saying …

[Odessa Dawn]

Correct the error in each sentence.

2. It is says that dolphins evolved 10 million years ago.

This is the answer provided by the answer key.

2. It is said that dolphins evolved 10 million years ago.

Source: MegaGoal 2.3 Workbook

Contributing Writer: Lisa Varandani



Are these grammatically correct?

1. It says that dolphins evolved 10 million years ago.

2. It is saying that dolphins evolved 10 million years ago.

 

[teechar]

Are these grammatically correct?

1. It says that dolphins evolved 10 million years ago.

2. It is saying that dolphins evolved 10 million years ago.

Yes they're grammatical, but they don't say the same thing as "It is said that etc", so they can't be potential answers to that question.
"It is said that" means "It is generally believed (by most) that". Here, "it" is a dummy subject.
On the other hand, the "it" in "it says that" or "It is saying that" is generally not a dummy. It refers to something concrete.