Which of the following activities constitutes engagement in research?

Can anybody me fill in these blanks? ? you so much if u can!

The youngest babies change position once every on average. a. 5 minutes b. half hour c. minute d. 10 minutes

Jacob plans to make reuben sandwiches for all his friends who are coming over to his house on a saturday evening. he is shopping for ingredients that would be required for the sandwiches. which type of bread should jacob ideally buy? a. white bread b. whole wheat bread c. sourdough bread d. ciabatta bread e. rye bread