Question

Rockwell's art __________ an iconic symbol to many Americans. Choose the verb that expresses an occurrence that began in the past and continues presently. becomes has become is becoming has been becoming

Answer 1

Rockwell’s art is an iconic symbol to many. Americans .

Answer 2

has become

Step-by-step explanation:

Here present perfect tense of become will be used. Present perfect tense is used when any action occurred in indefinite time in past.

Present perfect tense is used in given form has/have+past participle of verb

Hence, here Rockwell's art became an american in indefinite past for american and hence has become is most suitable option here.