in which step of a muscle contraction is the sacromere the longest?\no step 1\no step 2\no step 3\no step 4

Brief Explanations:

In muscle contraction, the sarcomere is longest in the relaxed state before any contraction - related steps begin. Without specific details about what steps 1 - 4 represent, but generally the initial state (which could be considered step 1 in a sequence starting from rest) has the longest sarcomere length as the myosin and actin filaments have minimal overlap compared to during contraction steps.

Answer:

step 1