Final answer:
A false positive on a home pregnancy test is not caused by taking the test too early; instead, taking the test too early can lead to a false negative as the hCG levels may not be detectable yet. A single line on a pregnancy test usually signifies a negative result.
Step-by-step explanation:
If done too early, home pregnancy tests will result in a false positive is False. When a home pregnancy test is taken too early, it may fail to detect the hormone hCG, which is the marker for pregnancy because the levels might not be high enough yet. This would lead to a false negative, not a false positive. A true positive result is indicated by two lines appearing on a pregnancy test.
If only the control line appears and no test line forms, as described in the scenario provided, the test result would be considered negative, not positive or false-positive. False positives are relatively rare and occur when something causes the test to detect hCG when it is not actually present due to reasons other than taking the test too early, such as certain medications or medical conditions.