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which sentence could be deleted from this paragraph to keep the focus on the main idea?

the earn-a-bike program provides donated bicycles and parts. jasmine earned her shiny new bike by volunteering ten hours at the shop. she organize the donated spare parts and others fix their bikes. she is a good student and knows how to follow directions. then she used the shop's tools and donated parts to fix up the bike she wanted.

a. jasmine earned her shiny new bike by volunteering ten hours at the shop.
b. she organize the donated spare parts and others fix their bikes.
c. she is a good student and knows how to follow directions.
d. then she used the shop's tools and donated parts to fix up the bike she wanted.

there is no passage what do you mean?

give me the passage and i will answer your question

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: