Animal testing ____ by many companies.have been bannedhas bannedwas been bannedis banned

To find the correct answer for the sentence "Animal testing ____ by many companies," we need to analyze the given options:

1. has been banned
2. has banned
3. was been banned
4. is banned

Break Down the Problem

1. Identify the subject of the sentence.
2. Determine the appropriate tense and form of the verb.

Relevant Concepts

• The subject "Animal testing" is a noun and can refer to something that is regulated or prohibited.
• The options should fit grammatically and contextually into the sentence.

Analysis and Detail

1. has been banned: This forms the present perfect passive voice, indicating something that has recently happened and affects the present.
2. has banned: This form suggests an active voice where the companies are responsible for the action, which does not suit the sentence context since animal testing should be the subject of the ban.
3. was been banned: This is grammatically incorrect as "was" should not be combined with "been" in this context.
4. is banned: This is present passive voice indicating that currently, animal testing is prohibited by companies.

Verify and Summarize

The correct choice should reflect that animal testing is currently banned by many companies. Both "has been banned" and "is banned" could be valid, but "is banned" fits best as it conveys a current status without ambiguity.

Final Answer

The correct answer is is banned. Hence, the complete sentence reads: "Animal testing is banned by many companies."