Phung is analyzing poems by E. E. C*mmings. He is searching the Internet for some poems that are not in his literature textbook. He comes to a website called Famous Poets and Poems. Although the website has quite a few poems by C*mmings, the first thing he sees when the page loads is an advertisement. Then, three advertisements appear on the page before any other text. Is this a good source for Phung to use? Why or why not?

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

i think that it is letter d.

i believe it is the first option, having taken lessons