Read the passage.

apostrophes

the apostrophe is a widely misused punctuation mark. in proper usage, the apostrophe indicates either a possessive case or where a letter or letters have been removed. an apostrophe is used to indicate a plural in only one special case—when there is a lowercase letter that is plural, such as in the phrase mind your p’s and q’s.

select the sentence that violates the guidelines for apostrophes.

i’ve always considered myself open to many different styles of music. however, the grunge music of the 1990’s took me a while to appreciate. now, though, i think eddie vedder’s voice is compelling. i wonder why it took me so long to understand grunge’s appeal.

However, the grunge music of the 1990’s took me a while to appreciate.

Explanation: According to the given paragraph, apostrophes are used in three cases: to indicate a possessive case (for example "Eddie Vedder's voice" and "grunge's appeal), when a letter or letters have been removed (for example "I've" because it is an abbreviation of "I have") and the third one is to indicate that a lowercase letter is plural, therefore the sentence that violates the guidelines for apostrophes is "However, the grunge music of the 1990’s took me a while to appreciate" because it should say "1990s."

it is the : d because is true

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.