NFHS Baseball Rules Practice Exam - Practice Test & Study Guide

In the scenario where R1 attempts to steal second base while B2 swings and causes interference, the key point involves the nature of the pitch and the resultant actions. According to NFHS rules, if a swing by the batter results in interference with a fielder (in this case, F2), it is deemed that the batter has violated the rule.

When the situation involves a third strike, the consequences of the interference are heightened. The batter is automatically out for interference, and in addition to this, the runner attempting to steal (R1) is also returned to the original base, effectively negating his attempt to advance due to the disruption caused by the batter's actions.

Therefore, when considering the specific ruling that involves both the actions of B2 and the circumstances of the pitch being a third strike, it leads to both B2 being declared out for the interference, as well as R1 being penalized by being called out or returned to first base, depending on the situation. In this case, since the pitch was a third strike, the correct application of the rule leads to the conclusion that both B2 and R1 are out, resulting in a double out due to the interference during an attempt to steal.