16. Because of the depth at which the ship sank, it is considered unfeasible _____ the Titanic from the floor of the Atlantic Ocean.
(A) to attempt the rising of
(B) to attempt to raise
(C) attempting to raise
(D) to attempt to rise

consider   v.  認真考慮，斟酌，細想

Don't make any decisions before you've considered the situation.

[ + question word ] Have you considered what you'll do if you don't get the job?

[ + -ing verb ] We're considering selling the house.

consider   v.  認爲；把…當作

He is currently considered (to be) the best British athlete.

[ passive + obj + to infinitive ] It is considered bad manners in some cultures to speak with your mouth full of food.

raise 人為地舉起或升高某物
raise awareness（提高意識）
raise the flag（升旗）

rise 自然而然地升高或上升
the sun rises（太陽升起）
the balloon rises（氣球上升）

題目翻譯：
由於這艘船沉沒的深度，從大西洋海底打撈鐵達尼號被認為是不可行的。

選項分析：
(A) to attempt the rising of —— ❌ 錯誤，“the rising of” 用法不自然，“rising” 是不及物名詞，無法用來表示”打撈”這個動作。
(B) to attempt to raise —— ✅ 正確，“attempt to do something” 是標準搭配，而 “raise” 是及物動詞，符合 “raise the Titanic”（將鐵達尼號打撈上來）。
(C) attempting to raise —— ❌ 錯誤，“considered infeasible” 後通常接不定詞 “to V” 而非動名詞 “V-ing”。
(D) to attempt to rise —— ❌ 錯誤，“rise” 是不及物動詞，意思是”上升”，而鐵達尼號無法自己上升，應該用 “raise”（及物動詞，意為”抬起、打撈”）。

正確答案： (B) to attempt to raise