Remote IT Developer recently implemented a new feature _______ users to optimize their web pages for search engines.

1. concerning 

2. allowing 

3. demonstrating 

4. preventing 

For those participants who choose the option, the program will automatically _____ the recommended model investment portfolio.

1. inform

2. implement 

3. fulfill

4. endure

Documents of a _____ nature should be either sealed in a box or safely stored at all times.

1. confidential 

2. limited

3. vacant

4. mandatory

Due to ______ conditions in the trade division, no export increase will be made this month.

1. opposing

2. unwilling

3. reluctant

4. unfavorable

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