Two short haired guinea pigs are mated several times. Out of 100 offspring, 25 of them have long hair. What are the probable
genotypes of the parents?

Both heterozygous, with the trait for short hair being dom over the long hair

Explanation:

25% would be homzygous dominant, 25% homzygous recessive and 50% heterozygous

i think this is wrong but i tried

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

option c is the correct answer.