review the details below.\n- runners attempting their first marathon should have at least one year of…

review the details below.\n- runners attempting their first marathon should have at least one year of running experience.\n- training at the race site can help new runners know what to expect from a marathon - length course.\n- would - be marathon runners must be physically prepared to follow a rigorous training schedule.\nchoose the best topic sentence to introduce a paragraph containing these details.\neven experienced marathon runners must prepare for the physical and mental demands of running a 26.2 - mile course.\nfirst - time marathon runners must take steps to prepare themselves for the race.\nnew runners are at a distinct disadvantage if they have never run a marathon race course before.

review the details below.\n- runners attempting their first marathon should have at least one year of running experience.\n- training at the race site can help new runners know what to expect from a marathon - length course.\n- would - be marathon runners must be physically prepared to follow a rigorous training schedule.\nchoose the best topic sentence to introduce a paragraph containing these details.\neven experienced marathon runners must prepare for the physical and mental demands of running a 26.2 - mile course.\nfirst - time marathon runners must take steps to prepare themselves for the race.\nnew runners are at a distinct disadvantage if they have never run a marathon race course before.

Answer

Brief Explanations:

The details are about first - time marathon runners (one - year running experience, training at the race site, physical preparation). The first option is about experienced runners, which is not relevant. The third option focuses on a disadvantage (not preparing the runners as the details do). The second option "First - time marathon runners must take steps to prepare themselves for the race" encompasses all the details (running experience as a step, training at the site as a step, following a training schedule as a step).

Answer:

First - time marathon runners must take steps to prepare themselves for the race.