Which of the following is used to avoid bias in a clinical trial?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

Jane is blood type a her husband is blood type b. jane is puzzled because their daughter is type o. explain how the daughter inherited a blood type that neither of her parents had explain your answer

Will mark brainliest. (20 points) many have pigments structures known as eyespots that detect direction of light. a. b. archaebacteria c. protists d. none of the above