A person who studies a subject in detail, especially to discover new information                            A. Retain / B. Researcher

To keep or continue to have something                                           A. Struggle / B. Retain

Used when expressing rates, prices, or measurements to mean "for each"                                  A. Regional / B. Per

The condition of being affected by something or experiencing something                                            A. Exposure / B. Multiple

To guess the cost, size, value, etc., of something                           A. Estimate / B. Exposure

To share information with others by speaking, writing, moving your body, or using other signals                                     A. Communicate / B. Opinion

The way in which people in a particular area, country, or social group pronounce words A. Regional / B. Accent

Relating to or coming from a particular part of a country      A. Regional / B. Retain

Having the same amount, value, purpose, qualities, etc.  A. Equivalent / B. Estimate

To experience difficulty and make a very great effort in order to do something                 A. Acquire / B. Struggle

To get something                                 A. Acquire / B. Equivalent

Very many of the same type or of different types                            A. Per / B. Multiple