I will consider your proposal overnight.
I will consider your offer.
I will consider it.
A sentence to say in one sentence is to say a sentence in one sentence! It is quite easy to say a sentence in one sentence if that is all you have to say. "The cat with brown hair, hair of brown has the cat" is a sentence to say in one sentence. To say in one sentence the reasons behind the onset of World War Two does not do the subject any justice at all.
A better question: is "Why consider the bible to God?" an English sentence?
It is not a sentence, but an infinitive phrase -- the infinitive verb "to consider" followed by the noun "proposal." Depending on how it appeared in a sentence, it could be either a noun phrase, adjective phrase, or adverb phrase.Their only option was to consider the proposal. (noun)The decision to consider the proposal was controversial. (adjective)The board met in special session to consider the proposal. (adverb)
Consider how adding more information can provide a clearer explanation.
SENTENCE: Considering her age, she reads very well.
It may be helpful to consider using phrases such as "it's clear that" or "it's evident that" in place of "obviously."
Just say it, don't consider any consequences but consider the rewards.
I will consider your feedback before making a decision.
you - it is implied.
Adverb