Recall that silent e is usually dropped before -able is added to an english word, except to indicate a soft c or g in the root (likeable is an exception to this

choose the correct form.

disposeable
disposable

The correct form is "disposable".

Explanation: Although the word "dispose" ends in an "e", the "e" is dropped when the suffix "-able" is added to the root word because the suffix starts with a vowel sound ("a"). Moreover, the "e" is dropped because there is no "c" or "g" in the root. In that way, spelling the word formed with the root "dispose" plus the suffix "-able" as "disposeable" is incorrect: "disposable" is the correct form.

faulty parallelism is a construction in which two or more parts of a sentence are equivalent in meaning but not grammatically similar in form.

the correct version of this faulty parallelism in the sentence is:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

the problem is the last sentence, the first two have a basic subject+verb+object structure.

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in all three sentences:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

in other words

to put it differently

for one thing

as an illustration

in this case

for this reason

to put it another way

that is to say

with attention to

by all means

important to realize

another key point

first thing to remember

most compelling evidence

must be remembered

point often overlooked

to point out

on the positive side

on the negative side

with this in mind

notably

including

like

to be sure

namely

chiefly

truly

indeed

certainly

surely

markedly

such as

especially

explicitly

specifically

expressly

surprisingly

frequently

significantly

particularly

in fact

in general

in particular

in detail

for example

for instance

to demonstrate

to emphasize

to repeat

to clarify

to explain

to enumerate