Question

eve thought that walnuts were causing her fresh breath. this was her blank

eve read about bacteria in the mouth. she talked to farmers and visited grocery stores to find out what walnuts were available in her area. this was her blank

eve ground up african walnuts and mixed the paste with some resin and sugar to make a gum. she also mixed another batch of walnuts with lime and water to make a mouthwash. she took 35 volunteers and divided them into four groups. one group ate whole walnuts. another group chewed walnut gum. the third used walnut mouthwash. the last group did none of those things. that made them \controls,\ an unaffected group against which they could compare test conditions. this was her blank

options: research, hypothesis, question, conclusion, field study, investigation

Explanation:

First Blank ( "Eve thought that walnuts were causing her fresh breath. This was her" )

A hypothesis is a proposed explanation or prediction. Eve's thought about walnuts causing fresh breath is a tentative explanation, so it's a hypothesis.

Research involves gathering information, reading, and conducting inquiries. Eve's actions of reading and talking to people to get info are part of research.

An investigation (or experiment) involves testing a hypothesis with procedures, groups (including control), etc. Eve's actions of making products, dividing volunteers, and testing conditions fit an investigation (or experiment - here "investigation" is an option).

Answer:

hypothesis

Second Blank ( "Eve read about bacteria in the mouth. She talked to farmers and visited grocery stores to find out what walnuts were available in her area. This was her" )