Question

Since the rise of his designs, Frank Lloyd Wright _______ an icon of modern architecture.
has become
became
becomes
had become
would become

Answer 1

Since the rise of his designs, Frank Lloyd Wright had become an icon of modern architecture.

However has and have are the present tense and had is the past tense.

Have is used for first person in plural form such as I, we and you.

On the other part, has can be used for the second person plural from such as he and she.