QUESTION 1 This article is mainly about __ A. how scientists wear frightening masks to trap and confuse crows B. how animal; are frightened when humans come too close to them C. how crows let out screeching calls of alarm whenever people are near D. how crows remember human faces and communicate with one another

## Step 1<br />The problem is a reading comprehension question, which requires understanding the main idea of an article. The options provided are different interpretations of the article's content.<br /><br />## Step 2<br />Option A suggests that the article is about how scientists use masks to confuse crows. This is a specific scenario and does not cover the overall theme of the article.<br /><br />## Step 3<br />Option B suggests that the article is about how animals are frightened when humans come too close. This is a broad statement and does not specifically focus on crows.<br /><br />## Step 4<br />Option C suggests that the article is about how crows let out screeching calls of alarm whenever people are near. This is a specific behavior of crows and does not cover the overall theme of the article.<br /><br />## Step 5<br />Option D suggests that the article is about how crows remember human faces and communicate with one another. This is a broad statement and covers the overall theme of the article.