Which of the following is a primary concern during the infant stage of development?

You would modify how often you work out in reps and sets and also modify calorie intake

Dis correct. the rest of the answers are definitely wrong.without the basic needs like food, shelter and love , one will remain trapped in trying to fulfil these needs first which means putting food on the table and struggling to pay bills. it is impossible to achieve self actualization when without the basic needs which is the base.

It's called the nephron.