Rosa has been using the mucus method of birth control. She knows to avoid unprotected intercourse
A) ?when her basal body temperature rises slightly.
B) ?when a white or yellow sticky discharge begins.
C) ?24 hours after a cloudy discharge begins.
D) ?three days before she begins to menstruate.
B
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Feature detectors can explain visual aftereffects such as the waterfall illusion
a. True b. False Indicate whether the statement is true or false
According to Freud, the _____ is the personality component that is responsible for seeking to satisfy basic biological needs
a. id b. ego c. superego d. libido
The _________ smile usually emerges around three months of age and plays a substantial role in initiating and maintaining interactions
a. social c. waking-state b. happy d. synchronous
A major reason that sustained attention improves in the preschool years is
A) a steady gain in children's ability to inhibit impulses and keep their mind on a competing goal. B) that adults use scaffolding to help children focus on one task at a time. C) that children become increasingly bored by novelty. D) that children become better at distinguishing appearance from reality.