PLEASEPLEASEPLEASE HELP ME IVE BEEN ASKING FOR ALMOST AN HOUR NOW AND NO ONES HELPING ME ILL GIVE BRAINLIEST PLS JUST HELP :((

A

Explanation:

The mechanism of contraction is the binding of myosin to actin, forming cross-bridges that generate filament movement (Figure 19.36).

Figure 38.36.  When (a) a sarcomere (b) contracts, the Z lines move closer together and the I band gets smaller. The A band stays the same width and, at full contraction, the thin filaments overlap.

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)

It was ernest rutherford