Read the following passage to answer questions

My father worked with a horse-plough,
His shoulders globed like a full sail strung
Between the shafts and the furrow.
The horse strained at his clicking tongue.

An expert. He would set the wing
And fit the bright steel-pointed sock.
The sod rolled over without breaking.
At the headrig, with a single pluck

Of reins, the sweating team turned round
And back into the land. His eye
Narrowed and angled at the ground,
Mapping the furrow exactly.

I stumbled in his hob-nailed wake,
Fell sometimes on the polished sod;
Sometimes he rode me on his back
Dipping and rising to his plod.

I wanted to grow up and plough,
To close one eye, stiffen my arm.
All I ever did was follow
In his broad shadow round the farm.

I was a nuisance, tripping, falling,
Yapping always. But today
It is my father who keeps stumbling
Behind me, and will not go away.

1. The simile "His shoulders globed like a full sail strung" most strongly suggests that guiding the plough required
A. strength
B. patience
C. knowledge
D. concentration

2. That the father is "an expert" is best indicated by the quotation
A. "The horses strained at his clicking tongue"
B. "And fit the bright-steel-pointed sock"
C. "Narrowed and angled at the ground"
D. "Mapping the furrow exactly"