Yes it is, it has a period therefore a complete sentence.
If you want my opinion, all these are a great thing to do.But
However answer B. Would be more reasonable to this question.
Answer:
The prediction a weather forecaster could give about the day would be:
The day will be partially sunny with few clouds, and low wind activity.
Explanation:
To understand the answer we need to understand a few elements here. First of all, Roger is packing a lunch of turkey sandwiches for the family. If the day would be completely sunny he would have gone for fruits, drinks, and sugar-rich food to maintain them hydrated and with enough energy for their system to sustain ventilation and temperature regulation processes. Becca, on the other hand, is making sure she has her inhaler because there is going to be a sunny morning and fresh noon, but also the fact that she is packing sunscreen for all-day means there is going to be clear sky with a great number of sun exposure that could hurt their skin. The inhaler would need for the temperature change from morning to noon, as well as the breathing rhythm under sun conditions. The father is packing the beach chairs with the help of Mark, meaning that there is no need for umbrellas, so the sun is not going to be that strong and there is no need for them to stop any rain.
