The correct answer is option A i.e. It explains why researchers were uncertain whether the seeds would grow after being in outer space.
It was believed that the seeds might not be viable because they were dispersed throughout the chamber and subjected to vacuum.
The seeds were gathered by Stan Krugman, and some of them were tried to sprout in Houston. Surprisingly, it was a success, and the seeds began to sprout; but, because the facilities were poor, they did not last long.
The remaining seeds were transferred to the western station in Placerville, California (redwood and Douglas fir) and the southern station in Gulfport, Mississippi (sycamore, loblolly pine, and sweetgum) a year later in an effort to try to germinate. A large number of the seeds and later cuttings were productive and developed into healthy seedlings.
The majority of these were distributed in 1975 and 1976 to numerous state forestry organisations to be planted as part of the country's bicentennial celebration. Some of these were planted with their Earth-bound counterparts as controls (as might be expected, after over forty years there is no discernible difference). Not all states received trees because these were southern and western species.
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